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21fe9edd96652b00861b454524f047fb967a05d98600491f1e3f7859631eb891 | 2026-01-21T00:00:00-05:00 | Information transport and transport-induced entanglement in open fermion chains | arXiv:2601.14153v1 Announce Type: new Abstract: Understanding the entanglement dynamics in quantum many-body systems under steady-state transport conditions is an actively pursued challenging topic. Hydrodynamic equations, akin to transport equations for charge or heat, would be of great interest but face severe challe... | https://arxiv.org/abs/2601.14153 | Academic Papers | svg |
b6cf979e7c6e434880bebd79454885194b1e64bd66cedd61f6bb695a9093935f | 2026-01-21T00:00:00-05:00 | Localizable Entanglement as an Order Parameter for Measurement-Induced Phase Transitions | arXiv:2601.14185v1 Announce Type: new Abstract: We identify localizable entanglement (LE) as an order parameter for measurement-induced phase transitions (MIPT). LE exhibits universal finite-size scaling with critical exponents that match previous MIPT results and gives a nice operational interpretation connecting MIPT... | https://arxiv.org/abs/2601.14185 | Academic Papers | svg |
b0c3bf9b7ae53c03bb2370c79751ec92235dd58806dde56b5f539434460c3e4f | 2026-01-21T00:00:00-05:00 | Device-independent quantum memory certification in two-point measurement experiments | arXiv:2601.14191v1 Announce Type: new Abstract: Quantum memories are key components of emerging quantum technologies. They are designed to store quantum states and retrieve them on demand without losing features such as superposition and entanglement. Verifying that a memory preserves these features is indispensable fo... | https://arxiv.org/abs/2601.14191 | Academic Papers | svg |
3a8debfd654b45a4704afcbf870d44b82db661670ebd316e9ab76472c6253f3b | 2026-01-21T00:00:00-05:00 | Native linear-optical protocol for efficient multivariate trace estimation | arXiv:2601.14204v1 Announce Type: new Abstract: The Hong-Ou-Mandel test estimates the overlap between spectral functions characterizing the internal degrees of freedom of two single photons. It can be viewed as a photon-native protocol that implements the well-known quantum SWAP test. Here, we propose a native linear-o... | https://arxiv.org/abs/2601.14204 | Academic Papers | svg |
50870d550f29d7049066347c6c9b1c686fe81be13cc50f9f2e9e559bde4a7f14 | 2026-01-21T00:00:00-05:00 | Locality forces equal energy spacing of quantum many-body scar towers | arXiv:2601.14206v1 Announce Type: new Abstract: Quantum many-body scars are non-thermal eigenstates embedded in the spectra of otherwise non-integrable Hamiltonians. Paradigmatic examples often appear as quasiparticle towers of states, such as the maximally ferromagnetic spin-1/2 states, also known as Dicke states. A d... | https://arxiv.org/abs/2601.14206 | Academic Papers | svg |
9d3b32c30deedd7c968fbd17b0749a08510e9a40f27d1060c040fd0e0bd02b58 | 2026-01-21T00:00:00-05:00 | Group Fourier filtering of quantum resources in quantum phase space | arXiv:2601.14225v1 Announce Type: new Abstract: Recently, it has been shown that group Fourier analysis of quantum states, i.e., decomposing them into the irreducible representations (irreps) of a symmetry group, enables new ways to characterize their resourcefulness. Given that quantum phase spaces (QPSs) provide an a... | https://arxiv.org/abs/2601.14225 | Academic Papers | svg |
93d0b3e4fea1527d6d504bd0533ba892f0292bd4b476b7c816ed9dbe00c5b814 | 2026-01-21T00:00:00-05:00 | Deep Learning Approaches to Quantum Error Mitigation | arXiv:2601.14226v1 Announce Type: new Abstract: We present a systematic investigation of deep learning methods applied to quantum error mitigation of noisy output probability distributions from measured quantum circuits. We compare different architectures, from fully connected neural networks to transformers, and we te... | https://arxiv.org/abs/2601.14226 | Academic Papers | svg |
9161602c9ad9a16699a57a7b08ce1454bfd4c3273970257c87823eee37b0c4c3 | 2026-01-21T00:00:00-05:00 | Homogeneous Microwave Delivery for Quantum Sensing with Nitrogen-Vacancy Centers at High Pressures | arXiv:2601.11725v1 Announce Type: cross Abstract: Nitrogen vacancy (NV) centers have been demonstrated as a useful tool in high pressure environments. However, the geometry and small working area of the diamond anvil cells (DACs) used to apply pressure present a challenge to effective delivery of microwave (mw) fields.... | https://arxiv.org/abs/2601.11725 | Academic Papers | svg |
8449c00ecaa93419e030f91605a8d1cdfc768e6c624e36f01fb15b16cdc80404 | 2026-01-21T00:00:00-05:00 | Quantum Kernel Machine Learning for Autonomous Materials Science | arXiv:2601.11775v1 Announce Type: cross Abstract: Autonomous materials science, where active learning is used to navigate large compositional phase space, has emerged as a powerful vehicle to rapidly explore new materials. A crucial aspect of autonomous materials science is exploring new materials using as little data ... | https://arxiv.org/abs/2601.11775 | Academic Papers | svg |
ca1a5ee24c1e0114a679030c7001bd982fffdfc3417df8408b26e285cb5f06c8 | 2026-01-21T00:00:00-05:00 | Trainability-Oriented Hybrid Quantum Regression via Geometric Preconditioning and Curriculum Optimization | arXiv:2601.11942v1 Announce Type: cross Abstract: Quantum neural networks (QNNs) have attracted growing interest for scientific machine learning, yet in regression settings they often suffer from limited trainability under noisy gradients and ill-conditioned optimization. We propose a hybrid quantum-classical regressio... | https://arxiv.org/abs/2601.11942 | Academic Papers | svg |
2f0888560a91e4ec537da94cf97ac016f1baad8ce234db0b8c51b1b29f7802d5 | 2026-01-21T00:00:00-05:00 | Measurement-induced crossover in quantum first-detection times | arXiv:2601.12102v1 Announce Type: cross Abstract: The quantum first-detection problem concerns the statistics of the time at which a system, subject to repeated measurements, is observed in a prescribed target state for the first time. Unlike its classical counterpart, the measurement back action intrinsic to quantum m... | https://arxiv.org/abs/2601.12102 | Academic Papers | svg |
61efd2501516d6d0ef015b68d4ca782f7ab4d0d13b3d6224c281fdae36b12e7f | 2026-01-21T00:00:00-05:00 | Quantum State Preparation of Ferromagnetic Magnons by Parametric Driving | arXiv:2601.12833v1 Announce Type: cross Abstract: We propose a method to prepare and certify Gaussian quantum states of the ferromagnetic resonance spin-wave modes in ferromagnets using a longitudinal drive. Contrary to quantum optics-based strategies, our approach harnesses a purely magnonic feature - the spin-wave no... | https://arxiv.org/abs/2601.12833 | Academic Papers | svg |
a30fdb7ea9872d8ff4f60a0ea901aabbca2edb5acd6845d708da5b36e897206b | 2026-01-21T00:00:00-05:00 | The Anderson impurity model from a Krylov perspective: Lanczos coefficients in a quadratic model | arXiv:2601.13255v1 Announce Type: cross Abstract: We study the Lanczos coefficients in a quadratic model given by an impurity interacting with a multi-mode field of fermions, also known as single impurity Anderson model. We analytically derive closed expressions for the Lanczos coefficients of Majorana fermion operator... | https://arxiv.org/abs/2601.13255 | Academic Papers | svg |
b43170006d76362f1d3c6c5ebe0e7a45bafd3637f83540ac5bfc8c6486fd2aa7 | 2026-01-21T00:00:00-05:00 | Two-Point Stabilizer R\'enyi Entropy: a Computable Magic Proxy of Interacting Fermions | arXiv:2601.13314v1 Announce Type: cross Abstract: Quantifying non-stabilizerness (``magic'') in interacting fermionic systems remains a formidable challenge, particularly for extracting high order correlations from quantum Monte Carlo simulations. In this Letter, we establish the two-point stabilizer R\'enyi entropy (S... | https://arxiv.org/abs/2601.13314 | Academic Papers | svg |
dd116a16f979e204dac69eeaf60677714eedd836cb119ded42a0c23dd45e4786 | 2026-01-21T00:00:00-05:00 | Inferring rotations using a bosonic Josephson junction | arXiv:2601.13344v1 Announce Type: cross Abstract: Rotation and quantum tunneling are fundamental concepts in physics, and their interplay in the ultracold atomic systems is of particular interest. In this theoretical work, we explore how tunneling dynamics in a bosonic Josephson junction are modified when the system is... | https://arxiv.org/abs/2601.13344 | Academic Papers | svg |
e917fa19699f54857c54738e0bf4c851a27791b060f191a6c4a1b2d67bdaaec6 | 2026-01-21T00:00:00-05:00 | Loopless multiterminal quantum circuits at odd parity | arXiv:2601.13369v1 Announce Type: cross Abstract: We theoretically investigate loopless multiterminal hybrid superconducting devices at odd fermion parity with time-reversal symmetry. We find that the energy-phase relationship has a double minimum corresponding to opposite windings of the superconducting phases. Spin-o... | https://arxiv.org/abs/2601.13369 | Academic Papers | svg |
f4ef5d4b679dee60bb909a4ef88d752c5139ecc105b4c9a258a31fcd9c178e37 | 2026-01-21T00:00:00-05:00 | Onset of thermalization of q-deformed SU(2) Yang-Mills theory on a trapped-ion quantum computer | arXiv:2601.13530v1 Announce Type: cross Abstract: Nonequilibrium dynamics of quantum many-body systems is one of the main targets of quantum simulations. This focus - together with rapid advances in quantum-computing hardware - has driven increasing applications in high-energy physics, particularly in lattice gauge the... | https://arxiv.org/abs/2601.13530 | Academic Papers | svg |
40d86bc0020e50d40d5a7face1a346fd5c1fecd5f9c88bc73e81bcc83005a5f9 | 2026-01-21T00:00:00-05:00 | Kaleidoscope Yang-Baxter Equation for Gaudin's Kaleidoscope models | arXiv:2601.13596v1 Announce Type: cross Abstract: Recently, researchers have proposed the Asymmetric Bethe ansatz method - a theoretical tool that extends the scope of Bethe ansatz-solvable models by "breaking" partial mirror symmetry via the introduction of a fully reflecting boundary. Within this framework, the integ... | https://arxiv.org/abs/2601.13596 | Academic Papers | svg |
5a9f5bcb241acbfc2fdd77e937c077dc0f308cc4192c0df60789eb56a9bd49e7 | 2026-01-21T00:00:00-05:00 | Recent progress on disorder-induced topological phases | arXiv:2601.13619v1 Announce Type: cross Abstract: Topological states of matter in disordered systems without translation symmetry have attracted great interest in recent years. These states with topological characters are not only robust against certain disorders, but also can be counterintuitively induced by disorders... | https://arxiv.org/abs/2601.13619 | Academic Papers | svg |
9fbcc0938f9d8934d0137f4868364ce785fcd99b8b8d3356662a457fa8b3db3f | 2026-01-21T00:00:00-05:00 | Topological Anderson insulator and reentrant topological transitions in a mosaic trimer lattice | arXiv:2601.13760v1 Announce Type: cross Abstract: We study the topological properties of a one-dimensional quasiperiodic-potential-modulated mosaic trimer lattice. To begin with, we first investigate the topological properties of the model in the clean limit free of quasiperiodic disorder based on analytical derivation... | https://arxiv.org/abs/2601.13760 | Academic Papers | svg |
cd5566545ac7673edb6d6ab240f45f0f6809559bd2cad0d2f398fb2b7c0a46ee | 2026-01-21T00:00:00-05:00 | Quantum simulation of general spin-1/2 Hamiltonians with parity-violating fermionic Gaussian states | arXiv:2601.13811v1 Announce Type: cross Abstract: We introduce equations of motion for a parity-violating fermionic mean-field theory (PV-FMFT): a numerically efficient fermionic mean-field theory based on parity-violating fermionic Gaussian states (PV-FGS). This work provides explicit equations of motion for studying ... | https://arxiv.org/abs/2601.13811 | Academic Papers | svg |
d39c1b0e0a9d6eda96a9d037452b698cfba077c0d889c774b40f3282944553f8 | 2026-01-21T00:00:00-05:00 | Confinement-Induced Floquet Engineering and Non-Abelian Geometric Phases in Driven Quantum Wire Qubits | arXiv:2601.13859v1 Announce Type: cross Abstract: This work theoretically demonstrates that a spin qubit in a parabolic quantum wire driven by a bichromatic field exhibits a confinement-tunable synthetic gauge field, leading to novel Floquet topological phenomena. The study presents the underlying mechanism for topolog... | https://arxiv.org/abs/2601.13859 | Academic Papers | svg |
6a628aea8bdfd7a398fa639449129f7a9069797db983d3178e45b981a37a2cae | 2026-01-21T00:00:00-05:00 | To infinity and back -- $1/N$ graph expansions of light-matter systems | arXiv:2601.13860v1 Announce Type: cross Abstract: We present a method for performing a full graph expansion for light-matter systems, utilizing the linked-cluster theorem. This method enables us to explore $1/N$ corrections to the thermodynamic limit $N\to \infty$ in the number of particles, giving us access to the mes... | https://arxiv.org/abs/2601.13860 | Academic Papers | svg |
2d4fb28cd1f4e05975f2da1efff2d375e5da820ce2b124a2b907e41d56deb5e4 | 2026-01-21T00:00:00-05:00 | The $O(n\to\infty)$ Rotor Model and the Quantum Spherical Model on Graphs | arXiv:2601.14119v1 Announce Type: cross Abstract: We show that the large $n$ limit of the $O(n)$ quantum rotor model defined on a general graph has the same critical behavior as the corresponding quantum spherical model and that the critical exponents depend solely on the spectral dimension $d_s$ of the graph. To this ... | https://arxiv.org/abs/2601.14119 | Academic Papers | svg |
3e3ab38e58efc120038116bf10b4a39c2b5c541958e721111b2e1505b2c4d965 | 2026-01-21T00:00:00-05:00 | Fundamental trade-off relation in probabilistic entanglement generation | arXiv:2112.03233v3 Announce Type: replace Abstract: We investigate the generation of entanglement between two non-interacting systems by synthesizing a new quantum process from the superposition of distinct processes characterized by local-only operations. Our analysis leads to the derivation of a universal trade-off r... | https://arxiv.org/abs/2112.03233 | Academic Papers | svg |
a0f8931accd69d46d4cc005923825fefcfbe4dd0d0ee57c977f52bcb325ece0f | 2026-01-21T00:00:00-05:00 | Generalising Aumann's Agreement Theorem | arXiv:2202.02156v3 Announce Type: replace Abstract: According to Aumann's celebrated theorem, rational agents cannot agree to disagree. In other words, agents who once shared a common prior probability distribution and who have common knowledge about their posteriors cannot assign different probability distributions to... | https://arxiv.org/abs/2202.02156 | Academic Papers | svg |
99f31044e5b87e256c35766b828faf7c13d547c047303e9d5671a3663559f663 | 2026-01-21T00:00:00-05:00 | Establishing trust in quantum computations | arXiv:2204.07568v2 Announce Type: replace Abstract: Quantum computing hardware has grown sufficiently complex that it often can no longer be simulated by classical computers, but its computational power remains limited by errors. These errors corrupt the results of quantum algorithms, and it is no longer always feasibl... | https://arxiv.org/abs/2204.07568 | Academic Papers | svg |
3722ad16b22d3ac00d8dde0c6a4520f6b99693e027e2ba51902c96081b1d5771 | 2026-01-21T00:00:00-05:00 | Nonadiabatic transitions in non-Hermitian $\mathcal{PT}$-symmetric two-level systems | arXiv:2301.10382v3 Announce Type: replace Abstract: We systematically characterize the dynamical evolution of time-parity (PT )-symmetric two-level systems with spin-dependent dissipations. If the control parameters of the gap are linearly tuned with time, the dynamical evolution can be characterized with parabolic cyl... | https://arxiv.org/abs/2301.10382 | Academic Papers | svg |
5925a8c014d94c7bbd9c0bf75b3b5b2b45625ee059a40e9cd69c2801c56f3397 | 2026-01-21T00:00:00-05:00 | Spectral Gaps via Imaginary Time | arXiv:2303.02124v2 Announce Type: replace Abstract: The spectral gap occupies a role of central importance in many open problems in physics. We present an approach for evaluating the spectral gap of a Hamiltonian from a simple ratio of two expectation values, both of which are evaluated using a quantum state that is ev... | https://arxiv.org/abs/2303.02124 | Academic Papers | svg |
5a037d9b8a1f4862ac8e4223ca5672a7340e2241976e69b26f473f5c9fb2c45a | 2026-01-21T00:00:00-05:00 | A Computational Tsirelson's Theorem for the Value of Compiled XOR Games | arXiv:2402.17301v3 Announce Type: replace Abstract: Nonlocal games are a foundational tool for understanding entanglement and constructing quantum protocols in settings with multiple spatially separated quantum devices. In this work, we continue the study initiated by Kalai et al. (STOC '23) of compiled nonlocal games,... | https://arxiv.org/abs/2402.17301 | Academic Papers | svg |
f49c49096cc2f4e00c57cbdff7e8184d3d802a34a4003e983ade934761356d36 | 2026-01-21T00:00:00-05:00 | Feedback-Based Quantum Algorithm for Excited States Calculation | arXiv:2404.04620v2 Announce Type: replace Abstract: Recently, feedback-based quantum algorithms have been introduced to calculate the ground states of Hamiltonians, inspired by quantum Lyapunov control theory. This paper aims to generalize these algorithms to the problem of calculating an eigenstate of a given Hamilton... | https://arxiv.org/abs/2404.04620 | Academic Papers | svg |
d30d365438612e6e2129f9c9cabc2e65a72138e267cdcfb2a970d03c9e16c9df | 2026-01-21T00:00:00-05:00 | Improving the trainability of VQE on NISQ computers for solving portfolio optimization using convex interpolation | arXiv:2407.05589v3 Announce Type: replace Abstract: Solving combinatorial optimization problems using variational quantum algorithms (VQAs) might be a promise application in the NISQ era. However, the limited trainability of VQAs could hinder their scalability to large problem sizes. In this paper, we improve the train... | https://arxiv.org/abs/2407.05589 | Academic Papers | svg |
141f36007ace0c9b1ca31fa41a88196ea6abb27bca589da8a8b475344b573779 | 2026-01-21T00:00:00-05:00 | Discretized Quantum Exhaustive Search for Variational Quantum Algorithms | arXiv:2407.17659v2 Announce Type: replace Abstract: Quantum computers promise a great computational advantage over classical computers, yet currently available quantum devices have only a limited amount of qubits and a high level of noise, limiting the size of problems that can be solved accurately with those devices. ... | https://arxiv.org/abs/2407.17659 | Academic Papers | svg |
444e4d183817e89fae9c99c4d37f69a42642470ed3c63afecb766aebbe4e02d0 | 2026-01-21T00:00:00-05:00 | Time Derivatives of Weak Values | arXiv:2409.01460v4 Announce Type: replace Abstract: The time derivative of a physical property often gives rise to another meaningful property. Since weak values provide empirical insights that cannot be derived from expectation values, this paper explores what physical properties can be obtained from the time derivati... | https://arxiv.org/abs/2409.01460 | Academic Papers | svg |
b00a6294f151ad8aafe614465b5d8bd7f1dd66daba2b83ac92f54b54e288c48e | 2026-01-21T00:00:00-05:00 | A Geometric Substructure for Quantum Dynamics | arXiv:2411.08230v5 Announce Type: replace Abstract: The description of a closed quantum system is extended with the identification of an underlying substructure enabling an expanded formulation of dynamics in the Heisenberg picture. Between measurements a ``state point" moves in an underlying multi-dimensional complex ... | https://arxiv.org/abs/2411.08230 | Academic Papers | svg |
1a695331f78947ef848fc391b67ad363c54aa1249f6ecdd48f91d8720e6ef8c5 | 2026-01-21T00:00:00-05:00 | Restricted Monte Carlo wave function method and Lindblad equation for identifying entangling open-quantum-system dynamics | arXiv:2412.08735v2 Announce Type: replace Abstract: We develop an extension of the Monte Carlo wave function approach that unambiguously identifies dynamical entanglement in general composite, open systems. Our algorithm performs tangential projections onto the set of separable states, leading to classically correlated... | https://arxiv.org/abs/2412.08735 | Academic Papers | svg |
9f52c8e5e1731256a845fcced82151826b01ac1d3400ea46ad25b8d049d5ad71 | 2026-01-21T00:00:00-05:00 | Optimal Hamiltonian recognition of unknown quantum dynamics | arXiv:2412.13067v2 Announce Type: replace Abstract: Identifying unknown Hamiltonians from their quantum dynamics is a pivotal challenge in quantum technologies. In this paper, we introduce Hamiltonian recognition, a framework that bridges quantum hypothesis testing and quantum metrology, aiming to identify the Hamilton... | https://arxiv.org/abs/2412.13067 | Academic Papers | svg |
b1dbbd0e90800be40f9252db1a64746307eff1ed22567de80793a55e59d10a4d | 2026-01-21T00:00:00-05:00 | Characterisation of individual gates using twirling circuits | arXiv:2412.15466v2 Announce Type: replace Abstract: We present a method to characterise qubit gates. Utilising the supermap formalism, we create a scheme for deterministic single-qubit gate analysis. Our approach introduces a new twirling process that is applied directly through fixed circuits. This method removes the ... | https://arxiv.org/abs/2412.15466 | Academic Papers | svg |
2f134856803412e48f0b6f0f34d756a129fa7b021550b85a4596f0c681a7a120 | 2026-01-21T00:00:00-05:00 | Dissipating quartets of excitations in a superconducting circuit | arXiv:2501.05960v3 Announce Type: replace Abstract: Over the past decade, autonomous stabilization of bosonic qubits has emerged as a promising approach for hardware-efficient protection of quantum information. However, applying these techniques to more complex encodings than the Schr\"odinger cat code requires exquisi... | https://arxiv.org/abs/2501.05960 | Academic Papers | svg |
486708ea31a955f3ec436897c6e88b662657bb8a3bb41854978ab30e8372ba9f | 2026-01-21T00:00:00-05:00 | QSteed: A Resource-Virtualized and Hardware-Aware Quantum Compilation Framework for Real Quantum Computing Processors | arXiv:2501.06993v2 Announce Type: replace Abstract: As quantum computing systems continue to scale up and become more clustered, efficiently compiling user quantum programs into high fidelity executable sequences on real hardware remains a key challenge for current quantum compilation systems. In this study, we introdu... | https://arxiv.org/abs/2501.06993 | Academic Papers | svg |
f999c005e3fe180cebb282583eb088421908e885af3bc3f458478a4966e00566 | 2026-01-21T00:00:00-05:00 | Unifying quantum stochastic methods using Wick's theorem on the Keldysh contour | arXiv:2501.09544v2 Announce Type: replace Abstract: We present a method, based on the Keldysh formalism, for deriving stochastic master equations that describe the non-Markovian dynamics of a quantum system coupled to a Gaussian environment. This approach yields a compact expression for the system's propagator, which w... | https://arxiv.org/abs/2501.09544 | Academic Papers | svg |
6fd3e173e628d9249957269a980762ed06c6586046a3df8a31087413302f4488 | 2026-01-21T00:00:00-05:00 | On the distinguishability of geometrically uniform quantum states | arXiv:2501.12376v2 Announce Type: replace Abstract: A geometrically uniform (GU) ensemble is a uniformly weighted quantum state ensemble generated from a fixed state by a unitary representation of a finite group $G$. In this work we analyze the problem of discriminating GU ensembles from various angles. Assuming that t... | https://arxiv.org/abs/2501.12376 | Academic Papers | svg |
fb5907660667b5a985f095c343e399201064ba1e64df10c027d04498b6c1f363 | 2026-01-21T00:00:00-05:00 | Exact non-Markovian master equations: a generalized derivation for Gaussian systems | arXiv:2502.14364v3 Announce Type: replace Abstract: We derive an exact master equation that captures the dynamics of a quadratic quantum system linearly coupled to a Gaussian environment of the same statistics: the Gaussian Master Equation (GME). Unlike previous approaches, our formulation applies universally to both b... | https://arxiv.org/abs/2502.14364 | Academic Papers | svg |
1510e71445136a83bdf61afb4e03d1754624aed1d2fb5def0637fd776debb8d2 | 2026-01-21T00:00:00-05:00 | Quantum state exclusion for group-generated ensembles of pure states | arXiv:2503.02568v2 Announce Type: replace Abstract: Quantum state exclusion is the task of determining which states from a given set a system was not prepared in. We provide a complete solution to optimal quantum state exclusion for arbitrary sets of pure states generated by finite groups, establishing necessary and su... | https://arxiv.org/abs/2503.02568 | Academic Papers | svg |
c073e5dc76cdd27bdf12b5132e73fa5eab8ccbcfc0fc2d0e0fc543992dc81374 | 2026-01-21T00:00:00-05:00 | Scalable quantum simulator with an extended gate set in giant atoms | arXiv:2503.04537v3 Announce Type: replace Abstract: Quantum computation and quantum simulation require a versatile gate set to optimize circuit compilation for practical applications. However, existing platforms are often limited to specific gate types or rely on parametric couplers to extend their gate set, which comp... | https://arxiv.org/abs/2503.04537 | Academic Papers | svg |
4ef9a1d850de3d2859a410920b5a0e7fa2f70d35ee92c77de63a051b8413e051 | 2026-01-21T00:00:00-05:00 | A Multilevel Framework for Partitioning Quantum Circuits | arXiv:2503.19082v4 Announce Type: replace Abstract: Executing quantum algorithms over distributed quantum systems requires quantum circuits to be divided into sub-circuits which communicate via entanglement-based teleportation. Naively mapping circuits to qubits over multiple quantum processing units (QPUs) results in ... | https://arxiv.org/abs/2503.19082 | Academic Papers | svg |
bd3fbe38051e1905bcb1abc49340569748185a2a1c83d7972c785cde2ad87744 | 2026-01-21T00:00:00-05:00 | Dissipation and non-thermal states in cryogenic cavities | arXiv:2504.00591v3 Announce Type: replace Abstract: We study the properties of photons in a cryogenic cavity, made by cryo-cooled mirrors surrounded by a room temperature environment. We model such a system as a multimode cavity coupled to two thermal reservoirs at different temperatures. Using a Lindblad master equati... | https://arxiv.org/abs/2504.00591 | Academic Papers | svg |
db40f539764965a7159c1beb266f64088f716eb701db111ae6a3e7dc016755f6 | 2026-01-21T00:00:00-05:00 | Dynamically stable two-mode squeezing in cavity optomechanics | arXiv:2504.03247v5 Announce Type: replace Abstract: Bosonic two-mode squeezed states are paradigmatic entangled states with broad applications in quantum information processing and quantum metrology. In this work, we propose a two-mode squeezing scheme in a hybrid three-mode cavity optomechanical system, where a mechan... | https://arxiv.org/abs/2504.03247 | Academic Papers | svg |
4cf9f2cf4cb50a0a2ddd0789848dd9d204712280ed22ac84c1091e45b6951435 | 2026-01-21T00:00:00-05:00 | Fault-tolerant protocols through spacetime concatenation | arXiv:2504.08918v4 Announce Type: replace Abstract: We introduce a framework called spacetime concatenation for fault-tolerant compilation of syndrome extraction circuits of stabilizer codes. Spacetime concatenation enables efficient compilation of syndrome extraction circuits into dynamical codes through structured ga... | https://arxiv.org/abs/2504.08918 | Academic Papers | svg |
fc01f32df258cab35c824710310bdc2cd8e63bbc582efbee41a4a2dcd4aa4379 | 2026-01-21T00:00:00-05:00 | Micromagnons and long-range entanglement in ferrimagnetic ground states | arXiv:2504.18724v2 Announce Type: replace Abstract: While significant attention has been devoted to studying entanglement in photonic systems, solid-state spin lattices remain relatively underexplored. Motivated by this gap, we investigate the entanglement structure of one-dimensional ferrimagnetic chains composed of a... | https://arxiv.org/abs/2504.18724 | Academic Papers | svg |
d097fede156f6898091e0d0e1a8ea29479211be2d508f252abc4763ecc9ca663 | 2026-01-21T00:00:00-05:00 | High-Temperature Fermionic Gibbs States are Mixtures of Gaussian States | arXiv:2505.09730v2 Announce Type: replace Abstract: Efficient simulation of a quantum system generally relies on structural properties of the quantum state. Motivated by the recent results by Bakshi et al. on the sudden death of entanglement in high-temperature Gibbs states of quantum spin systems, we study the high-te... | https://arxiv.org/abs/2505.09730 | Academic Papers | svg |
6604c7af5b1e4f0a2e376401d3617368d01afda3aabaa6a470e9834bbc8356b0 | 2026-01-21T00:00:00-05:00 | Experimental robustness benchmarking of quantum neural networks on a superconducting quantum processor | arXiv:2505.16714v2 Announce Type: replace Abstract: Quantum machine learning (QML) models, like their classical counterparts, are vulnerable to adversarial attacks, hindering their secure deployment. Here, we report the first systematic experimental robustness benchmark for 20-qubit quantum neural network (QNN) classif... | https://arxiv.org/abs/2505.16714 | Academic Papers | svg |
e044d7c90367e25b4f638ba8ee826ac29879e63d58ad7e0a5ff0802eb72b5b53 | 2026-01-21T00:00:00-05:00 | Probing the quantum motion of a macroscopic mechanical oscillator with a radio-frequency superconducting qubit | arXiv:2505.21481v2 Announce Type: replace Abstract: Long-lived mechanical resonators like drums oscillating at MHz frequencies and operating in the quantum regime are a powerful platform for quantum technologies and tests of fundamental physics. Yet, quantum control of such systems remains challenging, owing to their l... | https://arxiv.org/abs/2505.21481 | Academic Papers | svg |
55cecf20fb52fd7023069426a5e929a79b9dac845a4e7b48cc5c225588fe975c | 2026-01-21T00:00:00-05:00 | Generalized momentum operators from Fourier transform correspondence | arXiv:2506.10950v2 Announce Type: replace Abstract: In this work we take a closer look at the algebraic-operator correspondence between the momentum space and the position space which defines the form of the canonical momentum operator in position space in Quantum Mechanics (QM). Starting from the Fourier transform (FT... | https://arxiv.org/abs/2506.10950 | Academic Papers | svg |
45deed0b966b507d6745a7d37f36decf9be42fffbbb3e1c03133fcb2bdbdf3dc | 2026-01-21T00:00:00-05:00 | Learning quantum tomography from incomplete measurements | arXiv:2506.19428v4 Announce Type: replace Abstract: We revisit quantum tomography in an informationally incomplete scenario and propose improved state reconstruction methods using deep neural networks. In the first approach, the trained network predicts an optimal linear or quadratic reconstructor with coefficients dep... | https://arxiv.org/abs/2506.19428 | Academic Papers | svg |
e721220d918daad2f7b503ed6c3e9c7ab15d71d2ea0a3500dc87a2d3e11db771 | 2026-01-21T00:00:00-05:00 | Free Electron Paths from Dirac's Wave Equation Elucidating Zitterbewegung and Spin | arXiv:2506.20857v3 Announce Type: replace Abstract: The worldline of a free electron is revealed by applying Dirac's velocity operator to its Dirac wave function whose space-time arguments are expressed in a proper time by a Lorentz transformation. This motion can be decomposed into two parts: the electron's global mot... | https://arxiv.org/abs/2506.20857 | Academic Papers | svg |
8933ad0c3a917e6accb10270742676724506087fb1ca928bf9d159bd3744376e | 2026-01-21T00:00:00-05:00 | Topologically noise robust network steering without inputs | arXiv:2506.23637v2 Announce Type: replace Abstract: Quantum networks with independent sources allow observing quantum nonlocality or steering with just a single measurement per node of the network, or without any inputs. Inspired by the recently introduced notion of swap-steering, we consider here the triangle network ... | https://arxiv.org/abs/2506.23637 | Academic Papers | svg |
229740d97677949aeff251a5c71a42a281b8f0fe816f274704ac4e98ace3fdc9 | 2026-01-21T00:00:00-05:00 | Small Quantum Low Density Parity Check Codes for Near-Term Experiments | arXiv:2507.09690v3 Announce Type: replace Abstract: It is widely accepted that quantum error correction is essential for realizing large-scale fault-tolerant quantum computing. Recent experiments have demonstrated error correction codes operating below threshold, primarily using local planar codes such as the surface c... | https://arxiv.org/abs/2507.09690 | Academic Papers | svg |
e910abfa101ffb2c6cbdbbe96394ed30db01c134474f0d4a68dd8b270febbe26 | 2026-01-21T00:00:00-05:00 | A Simple Method of Evaluating Laser Diode Suitability for Phase-Noise Based QRNG | arXiv:2507.17471v2 Announce Type: replace Abstract: Quantum random number generators (QRNGs) based on semiconductor laser phase noise are an inexpensive and efficient resource for true random numbers. Commercially available technology allows for designing QRNG setups tailored to specific use cases. However, it is impor... | https://arxiv.org/abs/2507.17471 | Academic Papers | svg |
3015077268c2c2f7e76817217c8346c82cb536d35db49ba4b2975c71afc04ab1 | 2026-01-21T00:00:00-05:00 | Quantum Advantage in Identifying the Parity of Permutations with Certainty | arXiv:2508.04310v2 Announce Type: replace Abstract: We establish a sharp quantum advantage in determining the parity (even/odd) of an unknown permutation applied to any number $n \ge 3$ of particles. Classically, this is impossible with fewer than $n$ labels, being that the success is limited to random guessing. Quantu... | https://arxiv.org/abs/2508.04310 | Academic Papers | svg |
40f3480470e9d171994e1a902249c5c01aa87a09384e31e356063eecec5f23ee | 2026-01-21T00:00:00-05:00 | Tuning of SiV quantum emission in nitrogen-doped nanodiamonds by dual-color excitation | arXiv:2509.06500v2 Announce Type: replace Abstract: The charge dynamics of silicon-vacancy (SiV) centers have been investigated for the first time in high-pressure high-temperature nanodiamonds (NDs) with varying concentrations of substitutional nitrogen (Ns). We demonstrate a controlled sixfold enhancement of SiV- pho... | https://arxiv.org/abs/2509.06500 | Academic Papers | svg |
1b4c867c1870b7f737e13ababa0639016d754568f013342a9e5226418eb2096f | 2026-01-21T00:00:00-05:00 | Universal quantum control over bosonic network | arXiv:2509.06560v2 Announce Type: replace Abstract: Perfect transfer of {\em unknown} states across distinct nodes is a basic function in bosonic quantum networks. Here we develop a general theory to construct an $N$-node bosonic network governed by the time-dependent Hamiltonian, as the universal quantum control theor... | https://arxiv.org/abs/2509.06560 | Academic Papers | svg |
fd8ca4ae1f2d391a10b73947e288c712f08a64a4cb3de46449a752c2892f71a6 | 2026-01-21T00:00:00-05:00 | Cost-aware Photonic Graph State Generation: A Graphical Framework | arXiv:2509.22777v2 Announce Type: replace Abstract: Photonic graph states are essential resources for quantum computation and communication. Deterministic emitter-based generation of graph states overcomes the scalability issues of probabilistic approaches; nonetheless, their experimental realization is constrained by ... | https://arxiv.org/abs/2509.22777 | Academic Papers | svg |
4c7b03ba3837efdfd68e1bcb02c6f0921c2d8cfdd0847f1846478993f5943108 | 2026-01-21T00:00:00-05:00 | Approximate Quantum State Preparation with Tree-Based Bayesian Optimization Surrogates | arXiv:2510.00145v3 Announce Type: replace Abstract: We study the problem of approximate state preparation on near-term quantum computers, where the goal is to construct a parameterized circuit that reproduces the output distribution of a target quantum state while minimizing resource overhead. This task is especially r... | https://arxiv.org/abs/2510.00145 | Academic Papers | svg |
9567f07fb40d4e45832f9125965961c99acdb194b5aabcf22e19bfa8910fb460 | 2026-01-21T00:00:00-05:00 | Angular--Momentum--Resolved Aharonov--Bohm Coupling Energy | arXiv:2510.06016v2 Announce Type: replace Abstract: We present an angular--momentum--resolved energetic formulation of the Aharonov--Bohm (AB) response for a confined Dirac electron based on two gauge--invariant interaction functionals: a magnetization--field functional and a current--potential functional. Using exact ... | https://arxiv.org/abs/2510.06016 | Academic Papers | svg |
17413a58dfc23982a0c583e468998f45d019e329f1f63ddd7159c684db0e8306 | 2026-01-21T00:00:00-05:00 | Exact WKB method for radial Schr\"odinger equation | arXiv:2510.11766v3 Announce Type: replace Abstract: We revisit exact WKB quantization for radial Schr\"odinger problems from the modern resurgence perspective, with emphasis on how ``physically meaningful'' quantization paths should be chosen and interpreted. Using connection formulae at simple turning points and at re... | https://arxiv.org/abs/2510.11766 | Academic Papers | svg |
f97c0b3ab32e5c5baf5881273a95741293de06be8716f4129887e9ce49b70502 | 2026-01-21T00:00:00-05:00 | Quantum State Designs via Magic Teleportation | arXiv:2510.13950v2 Announce Type: replace Abstract: We investigate how non-stabilizer resources enable the emergence of quantum state designs within the projected ensemble. Starting from initial states with finite magic and applying resource-free Clifford circuits to scramble them, we analyze the ensemble generated by ... | https://arxiv.org/abs/2510.13950 | Academic Papers | svg |
3075c478572aac94840a8fa4010925bb2e55b86f13e13682e461065c002e2fdc | 2026-01-21T00:00:00-05:00 | Macroscopic quantum phenomena and quantum computing | arXiv:2510.19846v2 Announce Type: replace Abstract: This News & Views article provides a perspective on the 2025 Nobel Prize in Physics, including the groundbreaking discovery of macroscopic quantum tunneling and energy quantization in superconducting circuits, the history and causes giving rise to this breakthrough, a... | https://arxiv.org/abs/2510.19846 | Academic Papers | svg |
9e5cb51b098d2262d2f7ff539719921a6e6e5f303f75cce480789edd73c1a112 | 2026-01-21T00:00:00-05:00 | Measurement-only circuit of perturbed toric code on triangular lattice: Topological entanglement, 1-form symmetry and logical qubits | arXiv:2510.23162v3 Announce Type: replace Abstract: Measurement-only (quantum) circuit (MoC) gives possibility to realize the states with rich entanglements, topological orders and quantum memories. This work studies the MoC, in which the projective-measurement operators consist of stabilizers of the toric code and com... | https://arxiv.org/abs/2510.23162 | Academic Papers | svg |
91c8e376d4cb2263c3d8cda782de312f016b6c5ace3d7750a06a53eccfd30eef | 2026-01-21T00:00:00-05:00 | Overcoming disorder in superconducting globally driven quantum computing | arXiv:2510.25996v2 Announce Type: replace Abstract: We study the impact of static disorder on a globally-controlled superconducting quantum computing architecture based on a quasi-two-dimensional ladder geometry [R. Menta et al., Phys. Rev. Research 7, L012065 (2025)]. Specifically, we examine how fabrication-induced i... | https://arxiv.org/abs/2510.25996 | Academic Papers | svg |
102ea5e59e52b2bd7600478fe98e14395bda1edabf9bb35de9112a1538554a44 | 2026-01-21T00:00:00-05:00 | Optimizing quantum violation for multipartite facet Bell inequalities | arXiv:2511.07523v2 Announce Type: replace Abstract: Nonlocality shapes quantum correlations, revealed through the violation of Bell inequalities. The intersection of all valid Bell inequalities is the so-called local polytope. In multipartite systems, characterizing the local polytope quickly becomes an intractable tas... | https://arxiv.org/abs/2511.07523 | Academic Papers | svg |
40745a3d4b43ddd08eb70cdeed7fa1b8d006707f6385c83c53ee91d134947e64 | 2026-01-21T00:00:00-05:00 | Separating QMA from QCMA with a classical oracle | arXiv:2511.09551v2 Announce Type: replace Abstract: We construct a classical oracle proving that, in a relativized setting, the set of languages decidable by an efficient quantum verifier with a quantum witness (QMA) is strictly bigger than those decidable with access only to a classical witness (QCMA). The separating ... | https://arxiv.org/abs/2511.09551 | Academic Papers | svg |
41f4c89577e1cbf3738e7b2a56d0e7feea79ceeb718e7a0d4f69e847f1390637 | 2026-01-21T00:00:00-05:00 | TRAM: A Transverse Relaxation Time-Aware Qubit Mapping Algorithm for NISQ Devices | arXiv:2511.16051v2 Announce Type: replace Abstract: Noisy intermediate-scale quantum (NISQ) devices impose dual challenges on quantum circuit execution: limited qubit connectivity requires extensive SWAP-gate routing, while time-dependent decoherence progressively degrades quantum information. Existing qubit mapping al... | https://arxiv.org/abs/2511.16051 | Academic Papers | svg |
1a9a1d37c6254042d9ea63d38741f83069e0b018de6d1303ffff20c287da9c0f | 2026-01-21T00:00:00-05:00 | COMPAS: A Distributed Multi-Party SWAP Test for Parallel Quantum Algorithms | arXiv:2511.23434v2 Announce Type: replace Abstract: The limited number of qubits per chip remains a critical bottleneck in quantum computing, motivating the use of distributed architectures that interconnect multiple quantum processing units (QPUs). However, executing quantum algorithms across distributed systems requi... | https://arxiv.org/abs/2511.23434 | Academic Papers | svg |
79bef6606d8158998665c531d079465aa2d2836cdb70a19c31eae38e32998e1a | 2026-01-21T00:00:00-05:00 | Information-efficient decoding of surface codes | arXiv:2512.14255v2 Announce Type: replace Abstract: Surface codes are a popular error-correction route to fault-tolerant quantum computation. The so-called exponential backlog problem that can arise when one has to do logical $T$-gates within the surface code demands real-time decoding of the syndrome information to di... | https://arxiv.org/abs/2512.14255 | Academic Papers | svg |
aa345e7028aadd2eaa2b08a0ed7794f435228d7313949190be9af15fe155b2f6 | 2026-01-21T00:00:00-05:00 | Improved Lower Bounds for QAC0 | arXiv:2512.14643v2 Announce Type: replace Abstract: In this work, we prove the strongest known lower bounds for QAC$^0$, allowing polynomially many gates and ancillae. Our main results show that: (1) Depth-3 QAC$^0$ circuits cannot compute PARITY, and require $\Omega(\exp(\sqrt{n}))$ gates to compute MAJORITY. (2) Dept... | https://arxiv.org/abs/2512.14643 | Academic Papers | svg |
54595ad484687fae9b286e289325d836a4bf70b226bfb984099afe2b891281bc | 2026-01-21T00:00:00-05:00 | Real Matrix Representations of Quantum Operators: An Introduction to Quantum Index Algebra | arXiv:2512.19977v2 Announce Type: replace Abstract: We introduce Quantum Index Algebra (QIA) as a finite, index-based algebraic framework for representing and manipulating quantum operators on Hilbert spaces of dimension $2^m$. In QIA, operators are expressed as structured combinations of basis elements indexed by Bool... | https://arxiv.org/abs/2512.19977 | Academic Papers | svg |
845ab8fd47cbf215b224199f773a4684b3ffa4748c533d7d617098246c8704ee | 2026-01-21T00:00:00-05:00 | Efficient Calculation of the Maximal R\'{e}nyi Divergence for a Matrix Product State via Generalized Eigenvalue Density Matrix Renormalization Group | arXiv:2601.02122v2 Announce Type: replace Abstract: The study of quantum and classical correlations between subsystems is fundamental to understanding many-body physics. In quantum information theory, the quantum mutual information, $I(A;B)$, is a measure of correlation between the subsystems $A,B$ in a quantum state, ... | https://arxiv.org/abs/2601.02122 | Academic Papers | svg |
dae365b06d7f9d79923a0ba003166ea7a98e2cdae4ca77c9c034768407ea69d2 | 2026-01-21T00:00:00-05:00 | Holographic codes seen through ZX-calculus | arXiv:2601.04467v2 Announce Type: replace Abstract: We re-visit the pentagon holographic quantum error correcting code from a ZX-calculus perspective. By expressing the underlying tensors as ZX-diagrams, we study the stabiliser structure of the code via Pauli webs. In addition, we obtain a diagrammatic understanding of... | https://arxiv.org/abs/2601.04467 | Academic Papers | svg |
62aecb1e8db03a03f95235f8e33b5e3b52d6e8e718a04ea6a7952c088c0786f4 | 2026-01-21T00:00:00-05:00 | Maximal Entanglement and Frozen Information: A Unified Framework for Dynamical Quantum Phase Transitions | arXiv:2601.04535v2 Announce Type: replace Abstract: Dynamical quantum phase transitions (DQPTs) are temporal singularities marked by zeros of the Loschmidt echo, yet their underlying quantum-information structure remains elusive. Here, we introduce a momentum-resolved entanglement entropy as a direct probe of DQPTs in ... | https://arxiv.org/abs/2601.04535 | Academic Papers | svg |
5a9f8632eb7fce8381ce4c915331edd1137ba571a53bb3599872fb250859a063 | 2026-01-21T00:00:00-05:00 | Breaking the Orthogonality Barrier in Quantum LDPC Codes | arXiv:2601.08824v3 Announce Type: replace Abstract: Classical low-density parity-check (LDPC) codes are a widely deployed and well-established technology, forming the backbone of modern communication and storage systems. It is well known that, in this classical setting, increasing the girth of the Tanner graph while ma... | https://arxiv.org/abs/2601.08824 | Academic Papers | svg |
32e41b5d21debd411b67ac8dfffc1664afbd94e90828a7bc77f89ea674f60153 | 2026-01-21T00:00:00-05:00 | Reversing quantum dynamics with near-optimal quantum and classical fidelity | arXiv:quant-ph/0004088v2 Announce Type: replace Abstract: We consider the problem of reversing quantum dynamics, with the goal of preserving an initial state's quantum entanglement or classical correlation with a reference system. We exhibit an approximate reversal operation, adapted to the initial density operator and... | https://arxiv.org/abs/quant-ph/0004088 | Academic Papers | svg |
232ed7c94b52ce1f0205c19f44256e8859824d0f2e4445155ce959bf2830f259 | 2026-01-21T00:00:00-05:00 | Valley Splitting Correlations Across a Silicon Quantum Well Containing Germanium | arXiv:2504.12455v3 Announce Type: replace-cross Abstract: Quantum dots in SiGe/Si/SiGe heterostructures host coherent electron spin qubits, which are promising for future quantum computers. The silicon quantum well hosts near-degenerate electron valley states, creating a low-lying excited state that is known to reduce ... | https://arxiv.org/abs/2504.12455 | Academic Papers | svg |
da7db9262e9a1133048b7d0d2c5cca260c5278de79eb7eb33ee564699960ac4b | 2026-01-21T00:00:00-05:00 | Compton Form Factor Extraction using Quantum Deep Neural Networks | arXiv:2504.15458v3 Announce Type: replace-cross Abstract: We extract Compton form factors (CFFs) from deeply virtual Compton scattering measurements at the Thomas Jefferson National Accelerator Facility (JLab) using quantum-inspired deep neural networks (QDNNs). The analysis implements the twist-2 Belitsky-Kirchner-M\"... | https://arxiv.org/abs/2504.15458 | Academic Papers | svg |
963fdd4f42c3a69b89ddbdef061d09c31c91c7e6fbf638fcc0f750b640a79f1b | 2026-01-21T00:00:00-05:00 | Acoustic phonons, spin-phonon coupling and spin relaxation via the lattice reorientation mechanism in hexagonal germanium nanowires | arXiv:2504.18198v3 Announce Type: replace-cross Abstract: Spin relaxation via electron-phonon interaction is an important decoherence mechanism for spin qubits. In this work, we study spin relaxation in hexagonal (2H) germanium, a novel direct-gap semiconductor showing great potential to combine highly coherent spin qu... | https://arxiv.org/abs/2504.18198 | Academic Papers | svg |
186e5f26815421e0e4bb62979541cfe6c7b091ecbfedf13e248b1523ca0da60f | 2026-01-21T00:00:00-05:00 | Emergent Thermalization Thresholds in Unitary Dynamics of Inhomogeneously Disordered Quantum Systems | arXiv:2505.11253v2 Announce Type: replace-cross Abstract: Inspired by the avalanche scenario for many-body localization (MBL) instability, we reverse the conventional set-up and ask whether a large weakly-disordered chain can thermalize a smaller, strongly-disordered chain when the composite system evolves unitarily. U... | https://arxiv.org/abs/2505.11253 | Academic Papers | svg |
50b8d56925f24cecac4cc76e2a625f1512444c2754c8442bdd5727f1448381ae | 2026-01-21T00:00:00-05:00 | Lattice models with subsystem/weak non-invertible symmetry-protected topological order | arXiv:2505.11419v2 Announce Type: replace-cross Abstract: We construct a family of lattice models which possess subsystem non-invertible symmetry-protected topological (SPT) order and analyze their interface modes protected by the symmetry, whose codimension turns out to be more than one. We also propose 2+1d lattice m... | https://arxiv.org/abs/2505.11419 | Academic Papers | svg |
031309940df71ee15570b2d2ea9dabd762accb7b83f51ffea01ac3a6cf8c25c0 | 2026-01-21T00:00:00-05:00 | Finite-temperature entanglement and coherence in asymmetric bosonic Josephson junctions | arXiv:2506.06224v2 Announce Type: replace-cross Abstract: We investigate the finite-temperature properties of a bosonic Josephson junction composed of N interacting atoms confined by a quasi-one-dimensional asymmetric double-well potential, modeled by the two-site Bose-Hubbard Hamiltonian. We compute numerically the sp... | https://arxiv.org/abs/2506.06224 | Academic Papers | svg |
a757c53e3c542679dcd95c4f9497685e9e4b83ca4e8f48faba403af82f1df00d | 2026-01-21T00:00:00-05:00 | Emergence of cosmic structure from Planckian discreteness | arXiv:2506.15413v2 Announce Type: replace-cross Abstract: In the standard inflationary paradigm the inhomogeneities observed in the CMB arise from quantum fluctuations of an initially homogeneous and isotropic vacuum state. This picture suffers from two well-known weaknesses. First, it assumes that quantum field theory... | https://arxiv.org/abs/2506.15413 | Academic Papers | svg |
b51172cea7e220e409ba56b7d560461983751e96fe54dcc6de6ad5079ef16c0c | 2026-01-21T00:00:00-05:00 | Surrogate Modeling via Factorization Machine and Ising Model with Enhanced Higher-Order Interaction Learning | arXiv:2507.01389v2 Announce Type: replace-cross Abstract: Recently, a surrogate model was proposed that employs a factorization machine to approximate the underlying input-output mapping of the original system, with quantum annealing used to optimize the resulting surrogate function. Inspired by this approach, we propo... | https://arxiv.org/abs/2507.01389 | Academic Papers | svg |
dac84d49e951a7bb16dd8df2fde4751521abbf234e83f65812df4f7f5dcf9686 | 2026-01-21T00:00:00-05:00 | Quantum Bootstrap Approach to a Non-Relativistic Potential for Quarkonium systems | arXiv:2508.02916v2 Announce Type: replace-cross Abstract: The quantum bootstrap method is applied to determine the bound-state spectrum of Quarkonium systems using a non-relativistic potential approximation. The method translates the Schr\"odinger equation into a set of algebraic recursion relations for radial moments ... | https://arxiv.org/abs/2508.02916 | Academic Papers | svg |
9d6dacc90ee09bd11cb46d49bc37f94fa000934b4fc460a87a7e8970b2b42ce4 | 2026-01-21T00:00:00-05:00 | There and Back Again: A Gauging Nexus between Topological and Fracton Phases | arXiv:2509.19440v2 Announce Type: replace-cross Abstract: Coupled layer constructions are a valuable tool for capturing the universal properties of certain interacting quantum phases of matter in terms of the simpler data that characterizes the underlying layers. In the study of fracton phases, the X-Cube model in 3+1D... | https://arxiv.org/abs/2509.19440 | Academic Papers | svg |
1cf1ea67d34f99b9074a40a8a1097d0d8eed912f3ef43849c4f109e9dabde10f | 2026-01-21T00:00:00-05:00 | Slow dynamics from a nested hierarchy of frozen states | arXiv:2510.03159v3 Announce Type: replace-cross Abstract: We identify the mechanism of slow heterogeneous relaxation in quantum kinetically constrained models (KCMs) in which the potential energy strength is controlled by a coupling parameter. The regime of slow relaxation includes the large-coupling limit. By expandin... | https://arxiv.org/abs/2510.03159 | Academic Papers | svg |
b8d3efc630540720630ae5d8fc60e7c5e3810d54f3420215c1e7716a48a44ed6 | 2026-01-21T00:00:00-05:00 | When Abstraction Breaks Physics: Rethinking Modular Design in Quantum Software | arXiv:2510.18557v2 Announce Type: replace-cross Abstract: Abstraction is a fundamental principle in classical software engineering, which enables modularity, reusability, and scalability. However, quantum programs adhere to fundamentally different semantics, such as unitarity, entanglement, the no-cloning theorem, and ... | https://arxiv.org/abs/2510.18557 | Academic Papers | svg |
0c56e9f07adcf4ee7f90f9e96b6561a1b4a9969ec1d014fbe85b83ab9fc0bafb | 2026-01-21T00:00:00-05:00 | Cosmological Entanglement Entropy from the von Neumann Algebra of Double-Scaled SYK & Its Connection with Krylov Complexity | arXiv:2511.03779v2 Announce Type: replace-cross Abstract: We investigate entanglement entropy between the pair of type II$_1$ algebras of the double-scaled SYK (DSSYK) model given a chord state, its holographic interpretation as generalized horizon entropy; particularly in the (anti-)de Sitter ((A)dS) space limits of t... | https://arxiv.org/abs/2511.03779 | Academic Papers | svg |
b6fad4bfb3359f5334bf705cc192a89446c3431a1c55c98e508dbb7355f9e328 | 2026-01-21T00:00:00-05:00 | Affine Symmetry and the Group-Theoretic Basis of the Unruh Effect | arXiv:2512.22648v2 Announce Type: replace-cross Abstract: A massless scalar field in two spacetime dimensions splits into two independent sectors of left and right-moving modes on the light cone. At the quantum level, these two sectors carry a representation of the group of affine transformations of the real line, with... | https://arxiv.org/abs/2512.22648 | Academic Papers | svg |
15d9b3d07817f41e34a8a40ea2cc66c91c8963663d9d1450887cbfac78138511 | 2026-01-21T00:00:00-05:00 | Construction of asymptotic quantum many-body scar states in the SU($N$) Hubbard model | arXiv:2601.04640v2 Announce Type: replace-cross Abstract: We construct asymptotic quantum many-body scars (AQMBS) in one-dimensional SU($N$) Hubbard chains ($N\geq 3$) by embedding the scar subspace into an auxiliary Hilbert subspace $\mathcal{H}_P$ and identifying a parent Hamiltonian within it, together with a corres... | https://arxiv.org/abs/2601.04640 | Academic Papers | svg |
6a3cb074c8b5a0a490f8e719b07df1498414f7f1ec911c3220594b6fd5a50a34 | 2026-01-21T04:35:42+00:00 | Gold hits record as Trump heads to Davos for Greenland talks | President en route to World Economic Forum in new plane after electrical problems forced Air Force One to turn back | https://www.ft.com/content/1369a45e-e39b-4aaa-a347-b1800da7fd31 | Business & Finance | |
1f324db0beca2b5e6dd120b60a37ee8aa03b8eaa6a626fb6e4ae5895022d63d9 | 2026-01-21T10:55:46+00:00 | Howard Lutnick heckled at World Economic Forum dinner | Event hosted by Larry Fink descended into uproar after combative remarks from US commerce secretary | https://www.ft.com/content/e2ae0417-6146-4428-96db-0484a6b024d1 | Business & Finance | |
34c7b244120e9a0b5be103978bb76dce1fe478bfe0ceb75364c0895e0f45d661 | 2026-01-21T05:00:31+00:00 | Trump row over Greenland derails Ukraine postwar deal | Signature of ‘prosperity plan’ expected at Davos has been postponed amid transatlantic rift | https://www.ft.com/content/9904baa7-d90b-4170-898d-d5ac8bebe466 | Business & Finance |
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