publicationDate stringlengths 1 2.79k | title stringlengths 1 36.5k ⌀ | abstract stringlengths 1 37.3k ⌀ | id stringlengths 9 47 |
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2021-04-14 | High-Q silicon nitride drum resonators strongly coupled to gates | Silicon nitride (SiN) mechanical resonators with high quality mechanical
properties are attractive for fundamental research and applications. However,
it is challenging to maintain these mechanical properties while achieving
strong coupling to an electrical circuit for efficient on-chip integration.
Here, we present a ... | 2104.07142v2 |
2021-05-06 | Spin-photon coupling for atomic qubit devices in silicon | Electrically addressing spin systems is predicted to be a key component in
developing scalable semiconductor-based quantum processing architectures, to
enable fast spin qubit manipulation and long-distance entanglement via
microwave photons. However, single spins have no electric dipole, and therefore
a spin-orbit mech... | 2105.02904v1 |
2021-05-12 | Hardware-Efficient Microwave-Activated Tunable Coupling Between Superconducting Qubits | Generating high-fidelity, tunable entanglement between qubits is crucial for
realizing gate-based quantum computation. In superconducting circuits, tunable
interactions are often implemented using flux-tunable qubits or coupling
elements, adding control complexity and noise sources. Here, we realize a
tunable $ZZ$ inte... | 2105.05384v1 |
2021-05-22 | Revival of oscillation and symmetry breaking in coupled quantum oscillators | Restoration of oscillation from an oscillation suppressed state in coupled
oscillators is an important topic of research and has been studied widely in
recent years. However, the same in the quantum regime has not been explored
yet. Recent works established that under certain coupling conditions coupled
quantum oscilla... | 2105.10640v1 |
2021-05-26 | Duality for optimal couplings in free probability | We study the free probabilistic analog of optimal couplings for the quadratic
cost, where classical probability spaces are replaced by tracial von Neumann
algebras, and probability measures on $\mathbb{R}^m$ are replaced by
non-commutative laws of $m$-tuples. We prove an analog of the Monge-Kantorovich
duality which ch... | 2105.12351v2 |
2021-06-04 | Spin-orbit coupling effects over thermoelectric transport properties in quantum dots | We study the effects caused by Rashba and Dresselhaus spin-orbit coupling
over the thermoelectric transport properties of a single-electron transistor,
viz., a quantum dot connected to one-dimensional leads. Using linear response
theory and employing the numerical renormalization group method, we calculate
the thermopo... | 2106.02184v1 |
2021-06-10 | Self-consistent derivation of the transverse mode coupling instability for coasting beams using the linearized Vlasov equation | The mode coupling instability for coasting beams has been discussed in a
previous paper using macroparticle tracking simulations from the pyHeadTail
code and a simple analytical formula which was proposed as an extension of the
ansatz used for the single-particle formalism. In this paper, we propose a
self-consistent d... | 2106.05557v1 |
2021-07-02 | Coupling two laser-cooled ions via a room-temperature conductor | We demonstrate coupling between the motions of two independently trapped ions
with a separation distance of 620 $\mu$m. The ion-ion interaction is enhanced
via a room-temperature electrically floating metallic wire which connects two
surface traps. Tuning the motion of both ions into resonance, we show flow of
energy w... | 2107.00851v1 |
2021-07-04 | Stability of BPS States and Weak Coupling Limits | We study the stability and spectrum of BPS states in ${\cal N}=2$
supergravity. We find evidence, and prove for a large class of cases, that BPS
stability exhibits a certain filtration which is partially independent of the
value of the gauge couplings. Specifically, for any perturbative value of any
gauge coupling $g \... | 2107.01539v1 |
2021-07-16 | Stability and Dynamics of Many-Body Localized Systems Coupled to Small Bath | It is known that strong disorder in closed quantum systems leads to many-body
localization (MBL), and that this quantum phase can be destroyed by coupling to
an infinitely large Markovian environment. However, the stability of the MBL
phase is less clear when the system and environment are of finite and
comparable size... | 2107.07710v2 |
2021-08-03 | Strong coupling and active cooling in a finite temperature hybrid atom-cavity system | For a standard two-level atom coupled to the quantized field of a resonant
cavity, finite temperature effects lead to thermal occupation of the cavity
modes that obfuscates measurement of the quantum nature of the atom-light
interaction. In this paper we demonstrate that using a hybrid system of a
superconducting cavit... | 2108.01386v2 |
2021-08-05 | Ultrastrong capacitive coupling of flux qubits | A flux qubit can interact strongly when it is capacitively coupled to other
circuit elements. This interaction can be separated in two parts, one acting on
the qubit subspaces and one in which excited states mediate the interaction.
The first term dominates the interaction between the flux qubit and an
LC-resonator, le... | 2108.02549v1 |
2021-08-09 | Running coupling constant at finite chemical potential and magnetic field from holography | According to the gauge/gravity duality, we use an
Einstein-Maxwell-dilaton(EMD) model to study the running coupling constant at
finite chemical potential and magnetic field. First, we calculate the effect of
temperature on the running coupling constant and find the results are in
consistent with lattice qualitatively. ... | 2108.03840v4 |
2021-08-09 | Capacitively-coupled and inductively-coupled excitons in bilayer MoS$_2$ | The interaction of intralayer and interlayer excitons is studied in a
two-dimensional semiconductor, homobilayer MoS$_2$. It is shown that the
measured optical susceptibility reveals both the magnitude and the sign of the
coupling constants. The interlayer exciton interacts capacitively with the
intralayer B-exciton (p... | 2108.04248v1 |
2021-08-11 | Collective excitations of rotating dusty plasma under quasi-localized charge approximation of strongly coupled systems | Collective excitations of rotating dusty plasma are analyzed under the quasi
localized charge approximation (QLCA) framework for strongly coupled systems by
explicitly accounting for the dust rotation in the analysis. Considering the
firm analogy of magnetoplasmons with "rotoplasmons" established by the recent
rotating... | 2108.05219v1 |
2021-08-19 | On Strongly Coupled Matrix Theory and Stochastic Quantization: A New Approach to Holographic Dualities | Stochastic quantization provides an alternate approach to the computation of
quantum observables, by stochastically sampling phase space in a path integral.
Furthermore, the stochastic variational method can provide analytical control
over the strong coupling regime of a quantum field theory -- provided one has a
decen... | 2108.08872v2 |
2021-08-22 | Mathematical Analysis of Modified BEM-FEM Coupling Approach for 3D Electromagnetic Levitation Problem | In electromagnetic analysis, the finite element and boundary element methods
jointly known as 'FEM-BEM coupling' is applied for numerically solving
levitation problem based on eddy current. The main focus behind this coupled
analysis method is to determine the dynamic characteristic of the levitating
body in the presen... | 2108.09632v1 |
2021-08-22 | Observation of near EF Fermi-arc van Hove singularity with prominent coupling to phonon in a van der Waals coupled Weyl semimetal | A van der Waals coupled Weyl semimetal material NbIrTe4 is investigated by
combining scanning tunneling microscopy/spectroscopy and first principles
calculations. We observe a sharp peak in the tunneling conductance near the
zero bias energy, and its origin is ascribed to a van Hove singularity
associated with a Lifshi... | 2108.09633v1 |
2021-08-22 | Controllability results for cascade systems of $m$ coupled $N$-dimensional Stokes and Navier-Stokes systems by $N-1$ scalar controls | In this paper, we deal with the controllability properties of a system of $m$
coupled Stokes systems or $m$ coupled Navier-Stokes systems. We show the
null-controllability of such systems in the case where the coupling is in a
cascade form and when the control acts only on one of the systems. Moreover, we
impose that t... | 2108.09856v2 |
2021-08-22 | $t$-channel Higgs production and constraints on off-shell Higgs couplings | This note is to record an unsucessful idea. I tried hard to persuade myself
to write this note as I have spent a significant fraction of time during this
summer. For Higgs resonant production and decaying in the $s$ channel, $i \to H
\to f$, the cross section is proportional to $y_i^2y_f^2/\Gamma_H$. Thus there
is a mu... | 2108.09861v1 |
2021-08-30 | Non-minimally Coupled Vector Boson Dark Matter | We consider a simple abelian vector dark matter (DM) model, where {\it only}
the DM $(\widetilde{X}_\mu)$ couples non-minimally to the scalar curvature
$(\widetilde{R})$ of the background spacetime via an operator of the form $\sim
\widetilde{X}_\mu\,\widetilde{X}^\mu\,\widetilde{R}$. By considering the
standard freeze... | 2108.13447v2 |
2021-09-01 | Entanglement Engineering by Transmon Qubit in a Circuit QED | this study significantly emphasizes on the entanglement engineering using a
transmon qubit. A transmon qubit is created with two superconducting islands
coupled with two Josephson Junction embedded into a transmission line. The
transmon qubit energies are manipulated through its coupling to the
transmission line. The k... | 2109.00316v1 |
2021-09-05 | Tuning nonequilibrium heat current and two-photon statistics via composite qubit-resonator interaction | Quantum thermal transport and two-photon statistics serve as two
representative nonequilibrium features in circuit quantum electrodynamics
systems. Here, we investigate quantum heat flow and two-photon correlation
function at steady-state in a composite qubit-resonator model, where one qubit
shows both transverse and l... | 2109.02089v1 |
2021-09-11 | Cavity mode dephasing via the optomechanical interaction with an acoustic environment | We consider an optomechanical system comprising a single cavity mode and a
dense spectrum of acoustic modes and solve for the quantum dynamics of initial
cavity mode Fock (i.e., photon number) superposition states and thermal
acoustic states. The optomechanical interaction results in dephasing without
damping and bears... | 2109.05338v1 |
2021-09-17 | Non-Markovian effects for hybrid plasmonic systems in the strong coupling regime | We study the role of non-Markovian effects in the emission spectrum of a
quantum emitter resonantly coupled to a surface plasmon in a metal-dielectric
structure as the system transitions to strong coupling regime. By using a
recent quantum approach to interacting plasmons that incorporates the effects
of host material'... | 2109.08773v2 |
2021-09-23 | Engineering dynamical couplings for quantum thermodynamic tasks | Describing the thermodynamic properties of quantum systems far from
equilibrium is challenging, in particular when the system is strongly coupled
to its environment, or when memory effects cannot be neglected. Here, we
address such regimes when the system-baths couplings are periodically modulated
in time. We show that... | 2109.11510v1 |
2021-09-30 | On the Non-Minimal Coupling of Magnetic Fields with Gravity in Schwarzschild Spacetime | In this work we study the effects of non-minimal coupling between
electromagnetism and gravity, which are motivated by quantum effects such as
vacuum polarization. We investigate the modification of both asymptotically
dipole and uniform magnetic fields around a Schwarzschild black hole that come
as the result of non-m... | 2109.15003v2 |
2021-10-01 | Modulational Instabity of Spin-Orbit Coupled Bose-Einstein Condensates in Discrete Media | We address the impact of intra-site spin-orbit (SO) coupling and associated
inter-component Rabi coupling on the modulational instability (MI) of
plane-wave states in two-component discrete Bose-Einstein condensates (BECs).
Conditions for the onset of the MI and the respective instability are found
analytically. SO cou... | 2110.00288v1 |
2021-10-05 | Dispersive and dissipative coupling of photon Bose-Einstein condensates | The synchronization of coherent states of light has long been an important
subject of basic research and technology. Recently, a new concept for analog
computers has emerged where this synchronization process can be exploited to
solve computationally hard problems - potentially faster and more
energy-efficient than wha... | 2110.01898v1 |
2021-10-06 | Evidence of Josephson coupling in a few-layer black phosphorus planar Josephson junction | Setting up strong Josephson coupling in van der Waals materials in close
proximity to superconductors offers several opportunities both to inspect
fundamental physics and to develop novel cryogenic quantum technologies. Here
we show evidence of Josephson coupling in a planar few-layer black Phosphorus
junction. The pla... | 2110.02877v1 |
2021-10-12 | Coexistence of parallel and series current paths in parallel-coupled double quantum dots in nonlinear transport regime | We investigated the electron transport properties of parallel-coupled double
quantum dot (DQD) devices under magnetic fields. When a low magnetic field was
applied, electron tunneling through parallel-coupled DQDs was observed. Under a
high magnetic field, we observed both electron tunneling through parallel- and
serie... | 2110.05857v1 |
2021-10-20 | Marital Stability With Committed Couples: A Revealed Preference Analysis | We present a revealed preference characterization of marital stability where
some couples are committed. A couple is committed if they can only divorce upon
mutual consent. We provide theoretical insights into the potential of the
characterization for identifying intrahousehold consumption patterns. We show
that when t... | 2110.10781v5 |
2021-10-25 | Design of Novel Coupling Mechanisms between Superconducting Flux Qubits | We have analyzed and proposed coupling mechanisms between Three Josephson
Junction Flux Qubits (3JJQ). For this, we have developed a numerical method to
extract the effective Hamiltonian of a system of coupled qubits via the
Schrieffer-Wolff transformation (SWT). We then give a comprehensive
introduction to the 3JJQ, a... | 2110.12779v1 |
2021-10-29 | Generalization of bibliographic coupling and co-citation using the node split network | Bibliographic coupling (BC) and co-citation (CC) are the two most common
citation-based coupling measures of similarity between scientific items. One
can interpret these measures as second-neighbor relations distinguished by the
direction of the citation: BC is a similarity between two citing items, whereas
CC is that ... | 2110.15513v1 |
2021-11-05 | Neutron star scalarization with Gauss-Bonnet and Ricci scalar couplings | Spontaneous scalarization of neutron stars has been extensively studied in
the Damour and Esposito-Far\`ese model, in which a scalar field couples to the
Ricci scalar or, equivalently, to the trace of the energy-momentum tensor.
However, scalarization of both black holes and neutron stars may also be
triggered by a cou... | 2111.03644v1 |
2021-11-10 | Light propagation and magnon-photon coupling in optically dispersive magnetic media | Achieving strong coupling between light and matter excitations in hybrid
systems is a benchmark for the implementation of quantum technologies. We
recently proposed [arXiv:2110.02984] that strong single-particle coupling
between magnons and light can be realized in a magnetized epsilon-near-zero
(ENZ) medium, in which ... | 2111.05851v1 |
2021-11-14 | Understanding photoluminescence of coupled metallic nanostructures based on a coupling classic harmonic oscillator model | Photoluminescence (PL) phenomenon from metallic nanostructures has been
explained and understood by several point of views. One of them is based on the
classic harmonic oscillator model, which describes PL of single mode. In this
study, we continue to expand this classic model to a coupling case, which
involves two osc... | 2111.07309v1 |
2021-11-17 | Submodular Optimization for Coupled Task Allocation and Intermittent Deployment Problems | In this paper, we demonstrate a formulation for optimizing coupled submodular
maximization problems with provable sub-optimality bounds. In robotics
applications, it is quite common that optimization problems are coupled with
one another and therefore cannot be solved independently. Specifically, we
consider two proble... | 2111.09387v1 |
2021-12-01 | Strong Long-Range Spin-Spin Coupling via a Kerr Magnon Interface | Strong long-range coupling between distant spins is crucial for spin-based
quantum information processing. However, achieving such a strong spin-spin
coupling remains challenging. Here we propose to realize a strong coupling
between two distant spins via the Kerr effect of magnons in a
yttrium-iron-garnet nanosphere. B... | 2112.00452v3 |
2021-12-03 | Imbalanced spin couplings in the copper hexameter compounds A2Cu3O(SO4)3 (A2=Na2, NaK, K2) | The minerals A2Cu3O(SO4)3 (A2=Na2, NaK, K2) constitute quantum spin systems
with copper hexamers as basic structural units. Strong intra-hexamer spin
couplings give rise to an effective triplet ground-state. Weak inter-hexamer
spin couplings are responsible for two-dimensional long-range magnetic order in
the (b,c)-pla... | 2112.01891v1 |
2021-12-06 | Quantum phases of ferromagnetically coupled dimers on Shastry-Sutherland lattice | The ground state (gs) of antiferromagnetically coupled dimers on the
Shastry-Sutherland lattice (SSL) stabilizes many exotic phases and has been
extensively studied. The gs properties of ferromagnetically coupled dimers on
SSL are equally important but unexplored. In this model the exchange coupling
along the $x$-axis ... | 2112.02975v1 |
2021-12-09 | Constraints on antisymmetric tensor fields from Bhabha scattering | Antisymmetric tensor fields are a compelling prediction of string theory.
This makes them an interesting target for particle physics because
antisymmetric tensors may couple to electromagnetic dipole moments, thus
opening a possible discovery opportunity for string theory. The strongest
constraints on electromagnetic d... | 2112.05058v2 |
2021-12-11 | Itinerant ferromagnetism of a dipolar Fermi gas with Raman-induced spin-orbit coupling | We elucidate the itinerant ferromagnetism of a dipolar Fermi gas with a
Raman-induced spin-orbit coupling by investigating the exotic phase diagrams at
zero and finite temperature. It is revealed that the dipolar interaction along
with spin-orbit coupling can corroborate the formation of ferromagnetism and
the Raman co... | 2112.05898v2 |
2021-12-21 | Coupling staggered-grid and vertex-centered finite-volume methods for coupled porous-medium free-flow problems | In this work, a new discretization approach for coupled free and
porous-medium flows is introduced, which uses a finite volume staggered-grid
method for the discretization of the Navier-Stokes equations in the free-flow
subdomain, while a vertex-centered finite volume method is used in the
porous-medium flow domain. Th... | 2112.11089v1 |
2021-12-23 | Quantum parameter estimation of nonlinear coupling in trilinear Hamiltonian with trapped ions | I propose an efficient method for measuring non-linear coupling between the
collective axial breathing mode and the radial rocking mode induced by the
mutual Coulomb repulsion in linear ion crystal. The quantum sensing technique
is based on the laser induced coupling between one of the vibrational modes and
the interna... | 2112.12487v1 |
2021-12-28 | An algebraic approach for the weak coupling of multiple Lohe tensor models | We present a systematic algebraic approach for the weak coupling of Cauchy
problems to multiple Lohe tensor models. For this, we identify an admissible
Cauchy problem to the Lohe tensor (LT) model with a characteristic symbol
consisting of four tuples in terms of a size vector, a natural frequency
tensor, a coupling st... | 2112.14272v1 |
2022-01-13 | Coherent single-photon scattering spectra for a giant-atom waveguide-QED system beyond dipole approximation | We investigate the single-photon scattering spectra of a giant atom coupled
to a one dimensional waveguide via multiple connection points or a continuous
coupling region. Using a full quantum mechanical method, we obtain the general
analytic expressions for the single-photon scattering coefficients, which are
valid in ... | 2201.04808v1 |
2022-01-14 | Spectrum of Single-Photon Scattering in a Strong-Coupling Hybrid Optomechanical System | We analyze theoretically the single-photon excitation and transmission
spectra of a strong-coupling hybrid optomechanics, where a two-level system
(TLS) is coupled to the mechanical resonator (MR), generating the
Jaynes-Cummings-type polariton doublets. In our model, both the optomichanical
coupling and the TLS-MR coup... | 2201.05370v1 |
2022-01-19 | Supersolid-like solitons in spin-orbit coupled spin-2 condensate | We study supersolid-like crystalline structures emerging in the stationary
states of a quasi-two-dimensional spin-orbit (SO)-coupled spin-2 condensate in
the ferromagnetic, cyclic, and antiferro-magnetic phases by solving a
mean-field model.Interplay of different strengths of SO coupling and
interatomic interactions gi... | 2201.07500v1 |
2022-01-26 | Spin Wave Electromagnetic Nano-Antenna Enabled by Tripartite Phonon-Magnon-Photon Coupling | We investigate tripartite coupling between phonons, magnons and photons in a
periodic array of elliptical magnetostrictive nanomagnets delineated on a
piezoelectric substrate to form a two-dimensional two-phase multiferroic
crystal. A surface acoustic wave (phonons) of 5 - 35 GHz frequency launched
into the substrate c... | 2201.11110v1 |
2022-01-28 | Cause-Effect Preservation and Classification using Neurochaos Learning | Discovering cause-effect from observational data is an important but
challenging problem in science and engineering. In this work, a recently
proposed brain inspired learning algorithm namely-\emph{Neurochaos Learning}
(NL) is used for the classification of cause-effect from simulated data. The
data instances used are ... | 2201.12181v1 |
2022-01-29 | Giant atoms with time-dependent couplings | We study the decay dynamics of a two-level giant atom that is coupled to a
waveguide with time-dependent coupling strengths. In the non-Markovian regime
where the retardation effect cannot be ignored, we show that the dynamics of
the atom depends on the atom-waveguide coupling strengths at an earlier time.
This allows ... | 2201.12575v2 |
2022-01-11 | CDNNs: The coupled deep neural networks for coupling of the Stokes and Darcy-Forchheimer problems | In this article, we present an efficient deep learning method called coupled
deep neural networks (CDNNs) for coupled physical problems. Our method compiles
the interface conditions of the coupled PDEs into the networks properly and can
be served as an efficient alternative to the complex coupled problems. To
impose en... | 2201.13237v1 |
2022-01-28 | CP Violation for the Heavens and the Earth | Electroweak baryogenesis can be driven by the top quark in a general two
Higgs doublet model with extra Yukawa couplings. Higgs quartics provide the
first order phase transition, while extra top Yukawa coupling $\rho_{tt}$ can
fuel the cosmic baryon asymmetry through the $\lambda_t\,{\rm Im}\,\rho_{tt}$
product, with f... | 2201.13245v1 |
2022-02-01 | Exact boundary controllability and exact boundary synchronization for a coupled system of wave equations with coupled Robin boundary controls | In this paper, we consider the exact boundary controllability and the exact
boundary synchronization (by groups) for a coupled system of wave equations
with coupled Robin boundary controls. Owing to the difficulty coming from the
lack of regularity of the solution, we confront a bigger challenge than that in
the case w... | 2202.00760v1 |
2022-02-04 | Engineering multifunctionality at oxide interfaces by multimode coupling | We employed first-principles density functional theory calculations guided by
group-theoretical analysis and demonstrated the control of
insulator-metal-insulator transition, polarization and two sublattice
magnetization in (LaFeO$_3$)$_1$/(CaFeO$_3$)$_1$ superlattice via. multi
structural mode coupling i.e., 'multimod... | 2202.02027v1 |
2022-02-23 | Many processors, little time: MCMC for partitions via optimal transport couplings | Markov chain Monte Carlo (MCMC) methods are often used in clustering since
they guarantee asymptotically exact expectations in the infinite-time limit. In
finite time, though, slow mixing often leads to poor performance. Modern
computing environments offer massive parallelism, but naive implementations of
parallel MCMC... | 2202.11258v1 |
2022-03-01 | Fast tunable coupling scheme of Kerr parametric oscillators based on shortcuts to adiabaticity | Kerr parametric oscillators (KPOs), which can be implemented with
superconducting parametrons possessing large Kerr nonlinearity, have been
attracting much attention in terms of their applications to quantum annealing,
universal quantum computation and studies of quantum many-body systems. It is
of practical importance... | 2203.00226v2 |
2022-03-01 | Impact of chemical disorder on magnetic exchange interactions in L1$_0$-FeNi (tetrataenite) | We investigate the effect of chemical disorder on the magnetic exchange
couplings and the Curie temperature ($T_{\text{c}}$) in L1$_0$-ordered FeNi
using first-principles-based calculations. We use supercells to model chemical
disorder, to account for the specific symmetry-broken local chemical
environments around the ... | 2203.00640v1 |
2022-03-10 | A Tighter Approximation Guarantee for Greedy Minimum Entropy Coupling | We examine the minimum entropy coupling problem, where one must find the
minimum entropy variable that has a given set of distributions $S = \{p_1,
\dots, p_m \}$ as its marginals. Although this problem is NP-Hard, previous
works have proposed algorithms with varying approximation guarantees. In this
paper, we show tha... | 2203.05108v1 |
2022-03-16 | Vainshtein screening in Horndeski theories nonminimally and kinetically coupled to ordinary matter | We study the Vainshtein screening mechanism in Horndeski theories in the
presence of a scalar field $\phi$ nonminimally and kinetically coupled to
ordinary matter field. A general interacting Lagrangian describing this
coupling is characterized by energy transfer $f_1$ and momentum exchange $f_2$.
For a spherically sym... | 2203.08520v3 |
2022-03-04 | Coupling approaches for classical linear elasticity and bond-based peridynamic models | Local-nonlocal coupling approaches provide a means to combine the
computational efficiency of local models and the accuracy of nonlocal models.
This paper studies the continuous and discrete formulations of three existing
approaches for the coupling of classical linear elasticity and bond-based
peridynamic models, name... | 2203.09934v1 |
2022-03-21 | Molecular state in a spin-orbital-angular-momentum coupled Fermi gas | We study the two-body bound states in a spin-orbital-angular-momentum (SOAM)
coupled quantum gas of fermions. Two different configurations are considered:
an attractive $s$-wave interaction exists between two spin species that are
SOAM coupled; and an atom with SOAM coupled internal spins interacts
state-selectively wi... | 2203.10834v1 |
2022-03-28 | (Half) Wormholes under Irrelevant Deformation | Recently it has been shown by Almheiri and Lin [1] that the reconstruction of
black-hole interior is sensitive to knowing the exact coupling of the boundary
theory even if the coupling is irrelevant. This motivates us to enlarge the set
of the one-time and two-time toy models inspired from the SYK by deforming the
same... | 2203.14988v1 |
2022-04-01 | Tunable hole spin-photon interaction based on g-matrix modulation | We consider a spin circuit-QED device where a superconducting microwave
resonator is capacitively coupled to a single hole confined in a semiconductor
quantum dot. Thanks to the strong spin-orbit coupling intrinsic to valence-band
states, the gyromagnetic g-matrix of the hole can be modulated electrically.
This modulat... | 2204.00404v3 |
2022-04-14 | Double version of the Rashba and Dresselhaus spin-orbit coupling | The Rashba and Dresselhaus types of spin-orbit coupling are two typical
linear coupling forms. We establish the fundamental physics of a model which
can be viewed as the double version of the Rashba and Dresselhaus spin-orbit
coupling. This model describes the low energy physics of a class of massless
Dirac fermions in... | 2204.06680v1 |
2022-04-28 | Ultrastrong Coupling of Band-Nested Excitons in Few-Layer Molybdenum Disulphide | The two-dimensional transition-metal dichalcogenides (2D TMDCs) are an
intriguing platform for studying light-matter interactions because they combine
the electronic properties of conventional semiconductors with the optical
resonances found in organic systems. However, the coupling strengths
demonstrated in strong exc... | 2204.13768v1 |
2022-05-10 | Landau-Zener transition between two levels coupled to continuum | For a Landau-Zener transition in a two-level system, the probability for a
particle, initially in the first level, {\em i}, to survive the transition and
to remain in the first level, depends exponentially on the square of the tunnel
matrix element between the two levels. This result remains valid when the
second level... | 2205.04625v1 |
2022-05-14 | Prospects of cooling a mechanical resonator with a transmon qubit in c-QED setup | Hybrid devices based on the superconducting qubits have emerged as a
promising platform for controlling the quantum states of macroscopic
resonators. The nonlinearity added by a qubit can be a valuable resource for
such control. Here we study a hybrid system consisting of a mechanical
resonator longitudinally coupled t... | 2205.07024v1 |
2022-05-20 | Sparse coupling and Markov blankets: A comment on "How particular is the physics of the Free Energy Principle?" by Aguilera, Millidge, Tschantz and Buckley | In this commentary, we respond to a technical analysis of the Free Energy
Principle (hereafter: FEP) presented in "How particular is the physics of the
Free Energy Principle" by Aguilera et al. In the target article, the authors
analyzed certain sparsely coupled stochastic differential equations whose
non-equilibrium s... | 2205.10190v2 |
2022-06-02 | Bistability in dissipatively coupled cavity magnonics | Dissipative coupling of resonators arising from their cooperative dampings to
a common reservoir induces intriguingly new physics such as energy level
attraction. In this study, we report the nonlinear properties in a
dissipatively coupled cavity magnonic system. A magnetic material YIG (yttrium
iron garnet) is placed ... | 2206.01231v1 |
2022-06-11 | Zero Bias Enhanced Stein Couplings | The Stein couplings of Chen and Roellin (2010) vastly expanded the range of
applications for which coupling constructions in Stein's method for normal
approximation could be applied, and subsumed both Stein's classical
exchangeable pair, as well as the size bias coupling. A further simple
generalization includes zero b... | 2206.05413v2 |
2022-06-12 | Synchronization based model for turbulent thermoacoustic systems | We present a phenomenological reduced-order model to capture the transition
to thermoacoustic instability in turbulent combustors. The model is based on
the framework of synchronization and considers the acoustic field and the
unsteady heat release rate from turbulent reactive flow as two nonlinearly
coupled sub-system... | 2206.05663v1 |
2022-06-16 | Stochastic Multi Configuration Time-Dependent Hartree for Dissipative Quantum Dynamics with Strong Intramolecular Coupling | In this article, we explore the dissipation dynamics of a strongly coupled
multidimensional system in contact with a Markovian bath following a
system-bath approach. We use in this endeavour the recently developed
stochastic Multi-Configuration Time-Dependent Hartree approach within the Monte
Carlo wave packet formalis... | 2206.08241v1 |
2022-06-21 | Faraday patterns in spin-orbit coupled Bose-Einstein condensates | We study the Faraday patterns generated by spin-orbit-coupling induced
parametric resonance in a spinor Bose-Einstein condensate with repulsive
interaction. The collective elementary excitations of the Bose-Einstein
condensate, including density waves and spin waves, are coupled as the result
of the Raman-induced spin-... | 2206.10222v1 |
2022-06-23 | Optimal linear cyclic quantum heat engines cannot benefit from strong coupling | Uncovering whether strong system-bath coupling can be an advantageous
operation resource for energy conversion can facilitate the development of
efficient quantum heat engines (QHEs). Yet, a consensus on this ongoing debate
is still lacking owing to challenges arising from treating strong couplings.
Here we conclude th... | 2206.11453v2 |
2022-06-29 | Arnold diffusion in a model of dissipative system | For a mechanical system consisting of a rotator and a pendulum coupled via a
small, time-periodic Hamiltonian perturbation, the Arnold diffusion problem
asserts the existence of `diffusing orbits' along which the energy of the
rotator grows by an amount independent of the size of the coupling parameter,
for all suffici... | 2206.14878v3 |
2022-07-14 | Nonreciprocal Amplification Transition in a Driven-Dissipative Quantum Network | We study the transport properties of a driven-dissipative quantum network,
where multiple bosonic cavities such as photonic microcavities are coupled
through a nonreciprocal bus with unidirectional transmission. For short-range
coupling between the cavities, the occurrence of nonreciprocal amplification
can be linked t... | 2207.06889v1 |
2022-07-20 | Undamped Rabi oscillations due to polaron-emitter hybrid states in non-linear photonic wave guide coupled to emitters | The collective dynamics of two non-interacting two-level emitters, which are
coupled to a structured wave guide that supports two-photon bound states, is
investigated. Tuning the energy of the two emitters such that they are in
resonance with the two-photon bound state energy band, we identify parameter
regimes where t... | 2207.10207v1 |
2022-08-06 | Early detection of synchrony in coupled oscillator model | In this paper, we study the applicability of an early warning index while
studying the transitions to complete and generalized synchronizations in the
coupled oscillator models using an unconventional system parameter and the
coupling strength as the required control parameters. The coupled oscillator
models are widely... | 2208.04905v1 |
2022-08-10 | Tunable Coupler for Mediating Interactions between a Two-Level System and a Waveguide from a Decoupled State to the Ultra-Strong Coupling Regime | Two-level systems (TLS) coupled to waveguides are a fundamental paradigm for
light-matter interactions and quantum networks. We introduce and experimentally
demonstrate a method to tune the interaction between a TLS, implemented as a
flux qubit, and a transmission line waveguide from a decoupled state to a
coupling str... | 2208.05571v2 |
2022-08-14 | Double exceptional points generated by the strong imaginary coupling of a non-Hermitian Hamiltonian in an optical microcavity | Exceptional points (EPs) have recently attracted considerable attention in
the study of non-Hermitian systems and in applications such as sensors and mode
switching. In particular, nontrivial topological structures of EPs have been
studied intensively in relation to encircling EPs. Thus, EP generation is
currently an i... | 2208.06860v2 |
2022-08-22 | Magnetically Tuned Continuous Transition from Weak to Strong Coupling in Terahertz Magnon Polaritons | Depending on the relative rates of coupling and dissipation, a light-matter
coupled system is either in the weak- or strong-coupling regime. Here, we
present a unique system where the coupling rate continuously increases with an
externally applied magnetic field while the dissipation rate remains constant,
allowing us ... | 2208.10030v1 |
2022-08-23 | Qualitative analysis of solutions to mixed-order positive linear coupled systems with bounded or unbounded delays | This paper addresses the qualitative theory of mixed-order positive linear
coupled systems with bounded or unbounded delays. First, we introduce a general
result on the existence and uniqueness of solutions to mixed-order linear
coupled systems with time-varying delays. Next, we obtain the necessary and
sufficient crit... | 2208.10706v2 |
2022-10-17 | Supersolid-like solitons in two-dimensional nonmagnetic spin-orbit coupled spin-1 and spin-2 condensates | We demonstrate spontaneous generation of spatially-periodic supersolid-like
super-lattice and stripe solitons in Rashba spin-orbit (SO) coupled spin-1 and
spin-2 quasi-two-dimensional nonmagnetic Bose-Einstein condensates (BECs). The
solitons in a weakly SO-coupled spin-1 BEC are circularly-symmetric of $(-1, 0,
+1)$ a... | 2210.08947v1 |
2022-10-24 | PARAFAC2-based Coupled Matrix and Tensor Factorizations | Coupled matrix and tensor factorizations (CMTF) have emerged as an effective
data fusion tool to jointly analyze data sets in the form of matrices and
higher-order tensors. The PARAFAC2 model has shown to be a promising
alternative to the CANDECOMP/PARAFAC (CP) tensor model due to its flexibility
and capability to hand... | 2210.13054v1 |
2022-11-14 | The weak coupling theory of all dimensional loop quantum gravity | The weak coupling loop quantum theory with Abelian gauge group provides us a
new perspective to study the weak coupling properties of LQG. In this paper,
the weak coupling theory of all dimensional loop quantum gravity is established
based on a symplectic-morphism between the $SO(D+1)$ holonomy-flux phase space
and the... | 2211.07498v2 |
2022-11-16 | Local coherence by thermalized intra-system coupling | Quantum superposition of energy eigenstates can appear autonomously in a
single quantum two-level system coupled to a low-temperature thermal bath, if
such coupling has a proper composite nature. We propose here a principally
different and more feasible approach employing engineered interactions between
two-level syste... | 2211.08851v2 |
2022-11-16 | Strongly coupled magnon-plasmon polaritons in graphene- 2D ferromagnet heterostructures | Magnons and plasmons are two very different types of collective modes, acting
on the spin and charge degrees of freedom, respectively. At first sight, the
formation of hybrid plasmon-magnon polaritons in heterostructures of plasmonic
and magnetic systems would face two challenges, the small mutual interaction,
via Zeem... | 2211.08949v1 |
2022-11-22 | Scalable couplings for the random walk Metropolis algorithm | There has been a recent surge of interest in coupling methods for Markov
chain Monte Carlo algorithms: they facilitate convergence quantification and
unbiased estimation, while exploiting embarrassingly parallel computing
capabilities. Motivated by these, we consider the design and analysis of
couplings of the random w... | 2211.12585v2 |
2022-11-27 | Entangled atomic ensemble and YIG sphere in coupled microwave cavities | We present a scheme to generate distant bipartite and tripartite entanglement
between an atomic ensemble and a yttrium iron garnet (YIG) sphere in coupled
microwave cavities. The system we consider has five excitation modes namely
cavity-1 photons, atomic ensemble, cavity-2 photons, magnon and phonon modes in
YIG spher... | 2211.14914v1 |
2022-12-02 | The effect of nonlinear lensing on the coupling of ultrafast laser pulses to hollow-core waveguides | Gas-filled hollow-core fibres are a flexible platform for the manipulation of
ultrafast laser pulses through a variety of nonlinear optical effects.
Efficient high-fidelity coupling of the initial pulses is very important for
system performance. Here we study the effect of self-focusing in gas-cell
windows on the coupl... | 2212.01460v1 |
2022-12-05 | Skyrmion inertia in synthetic antiferromagnets | We describe the dynamics of magnetic skyrmions in synthetic antiferromagnets
(SAF), with a finite interlayer coupling. Due to the opposite gyrovector of the
skyrmions in the two SAF layers, the coupled skyrmions reach a stationary
regime with a spatial separation, in a direction orthogonal to their velocity.
As a conse... | 2212.02342v1 |
2022-12-08 | Adaptive Radar Detection and Bearing Estimation in the Presence of Unknown Mutual Coupling | This paper deals with joint adaptive radar detection and target bearing
estimation in the presence of mutual coupling among the array elements. First
of all, a suitable model of the signal received by the multichannel radar is
developed via a linearization procedure of the Uniform Linear Array (ULA)
manifold around the... | 2212.04261v1 |
2022-12-09 | Probing anomalous $Z\,Z\,γ$ and $Z\,γ\,γ$ Couplings at the $e^+\,e^-$ Colliders using Optimal Observable Technique | We study the anomalous $ZZ\gamma$ and $Z\gamma\gamma$ couplings that can be
probed via $Z\gamma$ production at the $e^+ \, e^-$ colliders. We take Standard
Model Effective Field Theory (SMEFT) approach to examine these anomalous
neutral triple gauge couplings in a model independent way. There are four
independent dimen... | 2212.05121v2 |
2022-12-14 | Spin singlet topological superconductivity in the attractive Rashba Hubbard model | Fully gapped, spin singlet superconductors with antisymmetric spin-orbit
coupling in a Zeeman magnetic field provide a promising route to realize
superconducting states with non-Abelian topological order and therefore
fault-tolerant quantum computation. Here we use a quantum Monte Carlo dynamical
cluster approximation ... | 2212.07251v1 |
2022-12-27 | Consistency of matter coupling in modified gravity | Matter coupling in modified gravity theories is a nontrivial issue when the
gravitational Lagrangian possesses a degeneracy structure to avoid the problem
of the Ostrogradsky ghost. Recently, this issue was addressed for bosonic
matter fields in the generalized disformal Horndeski class, which is so far the
most genera... | 2212.13391v2 |
2023-01-10 | Investigation of the characteristics of the electromagnetic induction transparent-like spectrum with counter-propagating waves coupling mechanism for waveguide and micro-ring coupled system | In this paper, a new counter-propagation waves coupling mechanism is proposed
which is expected to realize an electromagnetically induced transparency
(EIT)-like effect. Comparing the travelling waves coupling mechanism (see J.
Mod. Opt. 2015,62:313-320 [9]) with the counter-propagating waves coupling
mechanism, we fin... | 2301.03820v1 |
2023-01-17 | Effect of phase and time coupling on NMR relaxation rate by random walk in phase space | The phase time coupling effect on NMR relaxation is investigated based on
coupled and uncoupled phase diffusion. The results indicate that phase and time
coupling could significantly impact the NMR relaxation time. The spectral
density term in the relaxation time expression is modified with an apparent
angular frequenc... | 2301.06875v2 |
2023-02-07 | The effective field theory approach to the strong coupling issue in $f(T)$ gravity | We investigate the scalar perturbations and the possible strong coupling
issues of $f(T)$ around a cosmological background, applying the effective field
theory (EFT) approach. We revisit the generalized EFT framework of modified
teleparallel gravity and apply it by considering both linear and second-order
perturbations... | 2302.03545v2 |
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