publicationDate stringlengths 1 2.79k | title stringlengths 1 36.5k ⌀ | abstract stringlengths 1 37.3k ⌀ | id stringlengths 9 47 |
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2019-02-27 | Tip-enhanced strong coupling spectroscopy, imaging, and control of a single quantum emitter | Optical cavities can enhance and control light-matter interactions. This has
recently been extended to the nanoscale, and with single emitter strong
coupling regime even at room temperature using plasmonic nano-cavities with
deep sub-diffraction-limited mode volumes. However, with emitters in static
nano-cavities, this... | 1902.10314v1 |
2019-02-28 | Quantum transistor realized with a single $Λ$-level atom coupled to the microtoroidal cavity | We propose a realization of the quantum transistor for coherent light fields
for the fibre-coupled microdisk cavities. We demonstrate by combining numerical
and analytical methods that both in strong coupling and bad cavity limits it is
possible to change system's behaviour from being fully transparent to being
fully r... | 1902.11052v1 |
2019-03-05 | Strong Coupling between Microwave Photons and Nanomagnet Magnons | Coupled microwave photon-magnon hybrid systems offer promising applications
by harnessing various magnon physics. At present, in order to realize high
coupling strength between the two subsystems, bulky ferromagnets with large
spin numbers are utilized, which limits their potential applications for
scalable quantum inf... | 1903.01887v3 |
2019-03-13 | Dynamics of dissipative topological defects in coupled phase oscillators | The dynamics of dissipative topological defects in a system of coupled phase
oscillators, arranged in one and two-dimensional arrays, is numerically
investigated using the Kuramoto model. After an initial rapid decay of the
number of topological defects, due to vortex-anti-vortex annihilation, we
identify a long-time (... | 1903.05473v1 |
2019-03-13 | Linear and non-linear coherent coupling in a Bell-Bloom magnetometer | Spin-exchange collisions in hot vapours are generally regarded as a
decoherence mechanism. In contrast, we show that linear and non-linear
spin-exchange coupling can lead to the generation of atomic coherence in a
Bell-Bloom magnetometer. In particular, we theoretically and experimentally
demonstrate that non-linear sp... | 1903.05605v1 |
2019-03-15 | Thermoelastic cloaking and the breaking of invisibility | The invariance under co-ordinate transformations of a set of partial
differential equations can lead to the possibility of invisibility cloaking,
whereby an anomaly in the interior of a body is shielded from an external
observer. The form invariance of the equations of thermoelasticity under a
class of transformations ... | 1903.06664v1 |
2019-03-16 | Can the dynamical Lamb effect be observed in a superconducting circuit? | The dynamical Lamb effect is predicted to arise in superconducting circuits
when the coupling of a superconducting qubit with a resonator is periodically
switched "on" and "off" nonadiabatically. We show that by using a
superconducting circuit which allows to switch between longitudinal and
transverse coupling of a qub... | 1903.06880v2 |
2019-03-19 | Probing the trilinear Higgs boson coupling in di-Higgs production at NLO QCD including parton shower effects | We present results for Higgs boson pair production with variations of the
trilinear Higgs boson self-coupling at next-to-leading order (NLO) in QCD
including the full top quark mass dependence. Differential results at 14 TeV
are presented, and we discuss the implications of anomalous trilinear couplings
as well as diff... | 1903.08137v2 |
2019-03-20 | High Landau levels of 2D electrons near the topological transition caused by interplay of spin-orbit and Zeeman energy shifts | In the presence of spin-orbit coupling two branches of the energy spectrum of
2D electrons get shifted in the momentum space. Application of in-plane
magnetic field causes the splitting of the branches in energy. When both,
spin-orbit coupling and Zeeman splitting are present, the branches of energy
spectrum cross at c... | 1903.08315v1 |
2019-03-25 | Long-range interaction induced collective dynamical behaviors | Long-range interacting systems are omnipresent in nature. We investigate here
the collective dynamical behavior in a long-range interacting system consisting
of coupled Stuart-Landau limit cycle oscillators. In particular, we analyze the
impact of a repulsive coupling along with symmetry breaking coupling. We report
th... | 1903.10138v1 |
2019-03-26 | Time response of a microring resonator to a rectangular pulse in different coupling regimes | We discuss the analytical temporal response of a microring resonator excited
through a bus waveguide by an optical rectangular pulse. Finite difference time
domain (FDTD) simulations illustrate the analytical solution and help in
understanding the meaning of the different coupling regimes. In addition, we
show that the... | 1903.10747v1 |
2019-03-26 | Emergent QCD Kondo effect in two-flavor color superconducting phase | We show that effective coupling strengths between ungapped and gapped quarks
in the two-flavor color superconducting (2SC) phase are renormalized by
logarithmic quantum corrections. We obtain a set of coupled
renormalization-group (RG) equations for two distinct effective coupling
strengths arising from gluon exchanges... | 1903.10953v2 |
2019-03-30 | Disentangling spin-orbit coupling and local magnetism in a quasi-two-dimensional electron system | Quantum interference between time-reversed electron paths in two dimensions
leads to the well-known weak localization correction to resistance. If
spin-orbit coupling is present, the resistance correction is negative, termed
weak anti-localization (WAL). Here we report the observation of WAL coexisting
with exchange co... | 1904.00295v2 |
2019-04-02 | Nematic-orbit coupling and nematic density waves in spin-1 condensates | We propose the creation of artificial nematic-orbit coupling in spin-1
Bose-Einstein condensates, in analogy to spin-orbit coupling. Using a suitably
designed microwave chip, the quadratic Zeeman shift, normally uniform in space,
can be made to be spatio-temporally varying, leading to a coupling between
spatial and nem... | 1904.01635v2 |
2019-04-10 | Coupling between Rydberg states and Landau levels of electrons trapped on liquid helium | We investigate the coupling between Rydberg states of electrons trapped on a
liquid Helium surface and Landau levels induced by a perpendicular magnetic
field. We show that this realises a prototype quantum system equivalent to an
atom in a cavity, where their coupling strength can be tuned by a parallel
magnetic field... | 1904.05035v1 |
2019-04-11 | Spin-exchange-induced exotic superfluids in a Bose-Fermi spinor mixture | We consider a mixture of spin-1/2 bosons and fermions, where only the bosons
are subjected to the spin-orbit coupling induced by Raman beams. The fermions,
although not directly coupled to the Raman lasers, acquire an effective
spin-orbit coupling through the spin-exchange interaction between the two
species. Our calcu... | 1904.05486v2 |
2019-04-15 | Properties of Coupled Single-Electron Lines | Fundamental properties of two electrostatically interacting single-electron
lines (SEL) are determined from a minimalistic tight-binding model. The lines
are represented by a chain of coupled quantum wells that could be implemented
in a mainstream nanoscale CMOS process technology and tuned electrostatically
by DC or A... | 1904.06822v3 |
2019-04-16 | Nucleation and propagation of excitation fronts in self-excited systems | Frictional interfaces exhibits a very rich dynamical behavior due to
frictional interactions. This work focuses on the transition between spatially
localized and propagating stick-slip motion. To overcome the difficulties
related to the non-smoothness of the friction law we have studied two models:
(model I) a friction... | 1904.07719v1 |
2019-04-18 | Ensemble-induced strong light-matter coupling of a single quantum emitter | We discuss a technique to strongly couple a single target quantum emitter to
a cavity mode, which is enabled by virtual excitations of a nearby mesoscopic
ensemble of emitters. A collective coupling of the latter to both the cavity
and the target emitter induces strong photon non-linearities in addition to
polariton fo... | 1904.08888v2 |
2019-04-19 | Absence of inter-layer tunnel coupling of $K$-valley electrons in bilayer MoS$_{2}$ | In Bernal stacked bilayer graphene interlayer coupling significantly affects
the electronic bandstructure compared to monolayer graphene. Here we present
magnetotransport experiments on high-quality $n$-doped bilayer MoS$_{2}$. By
measuring the evolution of the Landau levels as a function of electron density
and applie... | 1904.09202v1 |
2019-04-30 | Characterizing Pairs Collaboration in a Mobile-equipped Shared-Wall Display Supported Collaborative Setup | Recent advancements in mobile devices encourage researchers to utilize them
in collaborative environments as a medium to interact with large shared
wall-displays. In this paper, we focus on a semi-controlled user study that we
conducted to measure the collaborative coupling ratio between partners working
in pairs in a ... | 1904.13364v1 |
2019-08-01 | Nonlinear Seebeck effect of SU($N$) Kondo impurity | We develop a theoretical framework to study the influences of coupling
asymmetry on the thermoelectrics of a strongly coupled SU($N$) Kondo impurity
based on a local Fermi liquid theory. Applying non-equilibrium Keldysh
formalism, we investigate charge current driven by the voltage bias and
temperature gradient in the ... | 1908.00415v1 |
2019-08-03 | Experimental evidence for Zeeman spin-orbit coupling in layered antiferromagnetic conductors | Most of solid-state spin physics arising from spin-orbit coupling, from
fundamental phenomena to industrial applications, relies on symmetry-protected
degeneracies. So does the Zeeman spin-orbit coupling, expected to manifest
itself in a wide range of antiferromagnetic conductors. Yet, experimental proof
of this phenom... | 1908.01236v2 |
2019-08-04 | Tuning the nonlinear dispersive coupling of nanomechanical string resonators | We investigate nonlinear dispersive mode coupling between the flexural in-
and out-of-plane modes of two doubly clamped, nanomechanical silicon nitride
string resonators. As the amplitude of one mode transitions from the linear
response regime into the nonlinear regime, we find a frequency shift of two
other modes. The... | 1908.01299v2 |
2019-08-05 | Attribute-Guided Coupled GAN for Cross-Resolution Face Recognition | In this paper, we propose a novel attribute-guided cross-resolution
(low-resolution to high-resolution) face recognition framework that leverages a
coupled generative adversarial network (GAN) structure with adversarial
training to find the hidden relationship between the low-resolution and
high-resolution images in a ... | 1908.01790v1 |
2019-08-07 | Fractionalized Degrees of Freedom at Infinite Coupling in large Nf QED in 2+1 dimensions | I consider quantum electrodynamics with many electrons in 2+1 space-time
dimensions at finite temperature. The relevant dimensionless interaction
parameter for this theory is the fine structure constant divided by the
temperature. The theory is solvable at any value of the coupling, in particular
for very weak (high te... | 1908.02758v2 |
2019-08-13 | RKKY coupling in Weyl semimetal thin films | We consider the effective coupling between impurity spins on surfaces of a
thin-film Weyl semimetal within Ruderman-Kittel-Kasuya-Yoshida (RKKY) theory.
If the spins are on the same surface, their coupling reflects the anisotropy
and the spin-momentum locking of the Fermi arcs. By contrast when the spins are
on opposit... | 1908.04554v1 |
2019-08-19 | Relativistic Artificial Molecules Realized by Two Coupled Graphene Quantum Dots | Coupled quantum dots (QDs), usually referred to as artificial molecules, are
important not only in exploring fundamental physics of coupled quantum objects,
but also in realizing advanced QD devices. However, previous studies have been
limited to artificial molecules with nonrelativistic fermions. Here, we show
that re... | 1908.06580v1 |
2019-08-19 | T-duality constraint on R-R couplings | It has been speculated that the metric, $B$-field and dilaton couplings in
the low energy effective action of string theory at any order of $\alpha'$ may
be found by imposing the gauge symmetries and the T-duality on the effective
action. This proposal can be extended to include the Ramond-Ramond (R-R)
couplings as wel... | 1908.06627v4 |
2019-10-31 | Dynamics of a qubit-oscillator system with periodically varying coupling | The dynamics of qubits coupled to a harmonic oscillator with time-periodic
coupling is investigated in the framework of Floquet theory. This system can be
used to model nonadiabatic phenomena that require a periodic modulation of the
qubit/oscillator coupling. The case of a single qubit coupled to a resonator
populated... | 1911.00138v1 |
2019-11-05 | Exceptional points in dissipatively coupled spin dynamics | We theoretically investigate dynamics of classical spins exchange-coupled
through an isotropic medium. The coupling is treated at the adiabatic level of
the medium's response, which mediates a first-order in frequency dissipative
interaction along with an instantaneous Heisenberg exchange. The resultant
damped spin pre... | 1911.01619v2 |
2019-11-11 | Numerical modelling of coupled linear dynamical systems | Numerical modelling of several coupled passive linear dynamical systems (LDS)
is considered. Since such component systems may arise from partial differential
equations, transfer function descriptions, lumped systems, measurement data,
etc., the first step is to discretise them into finite-dimensional LDSs using,
e.g., ... | 1911.04219v1 |
2019-11-14 | Stability of coupled solitary wave in biomembranes and nerves | In this work, we consider the electromechanical density pulse as a coupled
solitary waves represented by a longitudinal compression wave and an
out-of-plane transversal wave (i.e., perpendicular to the membrane surface). We
analyzed using, the variational approach, the characteristics of the coupled
solitary waves in t... | 1911.05993v1 |
2019-11-19 | Enhancement of the indistinguishability of single photon emitters coupled to photonic waveguides | One of the main steps towards large-scale quantum photonics consists of the
integration of single photon sources (SPS) with photonic integrated circuits
(PICs). For that purpose, the PICs should offer an efficient light coupling and
a high preservation of the indistinguishability of photons. Therefore,
optimization of ... | 1911.08290v2 |
2019-11-15 | On the use of near-neutral Backward Lyapunov Vectors to get reliable ensemble forecasts in coupled ocean-atmosphere systems | The use of coupled Backward Lyapunov Vectors (BLV) for ensemble forecast is
demonstrated in a coupled ocean-atmosphere system of reduced order, the Modular
Arbitrary Order Ocean-Atmosphere Model (MAOOAM). It is found that overall the
best set of BLVs to initialize a (multiscale) coupled ocean-atmosphere
forecasting sys... | 1911.09495v2 |
2019-11-23 | Invariant subspaces and exact solutions for some types of scalar and coupled time-space fractional diffusion equations | We explain how the invariant subspace method can be extended to a scalar and
coupled system of time-space fractional partial differential equations. The
effectiveness and applicability of the method have been illustrated through
time-space (i) fractional diffusion-convection equation, (ii) fractional
reaction-diffusion... | 1911.10408v2 |
2019-11-24 | A numerical study of the rippling instability driven by electron-phonon coupling in graphene | Suspended graphene exhibits ripples of size ranging from 50 to 100 {\AA} and
height $\sim$10{\AA}, however, their origin remains undetermined. Previous
theoretical works have proposed that rippling in graphene might be generated by
the coupling between the bending modes and the density of electrons. These
studies theor... | 1911.10510v3 |
2019-11-27 | Novel matter coupling in Einstein gravity | A general framework of the novel matter coupling in the Einstein gravity is
introduced. We firstly prove that a class of theories whose Hamiltonian
constraint is given by an arbitrary function $f(H_g)$, where $H_g$ is the
Hamiltonian constraint of general relativity (GR), is equivalent to GR in the
vaccum. A novel Jord... | 1911.12026v2 |
2019-11-27 | The effect of nuclear-quadrupole coupling in the laser induced alignment of molecules | We present a theoretical study of the time-dependent laser alignment of
molecules taking into account the hyperfine coupling due to nuclear-quadrupole
interactions. The coupling of nuclear spins to the overall angular momentum of
molecules significantly influences their rotational dynamics. Here, we
systematically anal... | 1911.12270v2 |
2019-11-28 | Spin-phonon interfaces in coupled nanomechanical cantilevers | Coupled micro- and nanomechanical oscillators are of fundamental and
technical interest for emerging quantum technologies. Upon interfacing with
long-lived solid-state spins, the coherent manipulation of the quantum hybrid
system becomes possible even at ambient conditions. While, the ability of these
systems to act as... | 1911.12642v1 |
2019-11-28 | Kerr-Newman stress-tensor from minimal coupling | In this paper, we demonstrate that at leading order in post Minkowskian (PM)
expansion, the stress-energy tensor of Kerr-Newman can be recovered to all
orders in spin from three sets of minimal coupling: the electric and
gravitational minimal coupling for higher-spin particles, and the "minimal
coupling" for massive sp... | 1911.12775v2 |
2019-12-03 | Molecular monolayer strong coupling in dielectric soft microcavities | We report strong coupling of a monolayer of J-aggregated dye molecules to the
whispering gallery modes of a dielectric microsphere at room temperature. We
systematically studied the evolution of strong coupling as the number of layers
of dye molecules was increased, we found the Rabi splitting to rise from 56 meV
for a... | 1912.01564v2 |
2019-12-09 | Synchronization and multi-cluster capabilities of oscillatory networks with adaptive coupling | We prove the existence of a multi-dimensional non-trivial invariant toroidal
manifold for the Kuramoto network with adaptive coupling. The constructed
invariant manifold corresponds to the multi-cluster behavior of the oscillators
phases. Contrary to the static coupling, the adaptive coupling strengths
exhibit quasiper... | 1912.03922v1 |
2019-12-09 | Synchronization of Discrete Oscillators on Ring Lattices and Small-World Networks | A lattice of three-state stochastic phase-coupled oscillators introduced by
Wood it et al. exhibits a phase transition at a critical value of the coupling
parameter $a$, leading to stable global oscillations (GO). On a complete graph,
upon further increase in $a$, the model exhibits an infinite-period (IP) phase
transi... | 1912.04104v1 |
2019-12-10 | Ligand-field contributions to spin-phonon coupling in a family of Vanadium molecular qubits from multi-reference electronic structure theory | Molecular electronic spins represent one of the most promising building
blocks for the design of quantum computing architectures. However, the
advancement of this technology requires the increase of spin lifetime at
ambient temperature. Spin-phonon coupling has been recognized as the key
interaction dictating spin rela... | 1912.04545v1 |
2019-12-12 | Ultrafast Intercavity Nonlinear Couplings between Polaritons | Realizing nonlinear coupling across space can enable new scientific and
technological advances, including ultrafast operation and propagation of
information in IR photonic circuitry, remote triggering or catalyzing of
chemical reactions, and new platforms for quantum simulations with increased
complexities. In this rep... | 1912.05725v1 |
2019-12-12 | Dynamics of a membrane coupled to an active fluid | The dynamics of a membrane coupled to an active fluid on top of a substrate
is considered theoretically. It is assumed that the director field of the
active fluid has rotational symmetry in the membrane plane. This situation is
likely to be relevant for in vitro reconstructed actomyosin-membrane system.
Different from ... | 1912.05747v2 |
2019-12-12 | Near-field Analysis of Strong Coupling between Localized Surface Plasmons and Excitons | We simulate the near-field effects of strong coupling between molecular
excitons and localized surface plasmons, supported by aluminum nanodisks. The
simulations are done using a simple model of a two-level system, implemented in
a commercial electromagnetic finite-difference time-domain solver. While the
Rabi splittin... | 1912.05887v1 |
2019-12-13 | A Communication Model for Large Intelligent Surfaces | The purpose of this paper is to introduce a communication model for Large
Intelligent Surfaces (LIS). A LIS is modelled as a collection of tiny closely
spaced antenna elements. Due to the proximity of the elements, mutual coupling
arises. An optimal transmitter design depends on the mutual coupling matrix.
For single u... | 1912.06644v3 |
2019-12-15 | Optical properties of a Brane-World black hole as photons couple to the Weyl tensor | In this article, we have investigated the equations of motion of the photons
coupled to Weyl tensor by the geometric optics approximation and the
corresponding shadow in a Brane-World black hole spacetime. It is shown that
there exists a double shadow for a black hole since the coupling photons with
different polarizat... | 1912.07068v2 |
2019-12-16 | Coupling silica waveguides to photonic crystal waveguides through multilayered Luneburg lens | We present a detailed analysis of a coupler based on the Luneburg lens to
couple a silica waveguide to a photonic crystal waveguide. The dependence of
coupling efficiency on the lens's truncation, cut position of the photonic
crystal structure, coupler tip width, and misalignment are investigated with
two-dimensional f... | 1912.07683v1 |
2019-12-18 | Multiple perfectly-transmitting states of a single-level at strong coupling | We study transport through a single-level system placed between two
reservoirs with band-structure, taking strong level-reservoir coupling of the
order of the energy-scales of these band-structures. An exact solution in the
absence of interactions gives the nonlinear Lamb shift. As expected, this moves
the perfectly-tr... | 1912.08701v2 |
2019-12-19 | Numerical stability of time-dependent coupled-cluster methods for many-electron dynamics in intense laser pulses | We investigate the numerical stability of time-dependent coupled-cluster
theory for many-electron dynamics in intense laser pulses, comparing two
coupled-cluster formulations with full configuration interaction theory. Our
numerical experiments show that orbital-adaptive time-dependent coupled-cluster
doubles (OATDCCD)... | 1912.09217v2 |
2019-12-20 | Realization of Anomalous Floquet Insulators in Strongly-Coupled Nanophotonic Lattices | We experimentally realized Floquet topological photonic insulators using a
square lattice of direct-coupled octagonal resonators. Unlike previously
reported topological insulator systems based on microring lattices, the
nontrivial topological behaviors of our system arise directly from the periodic
evolution of light a... | 1912.10126v1 |
2019-12-23 | Scalarization of horizonless reflecting stars: neutral scalar fields non-minimally coupled to Maxwell fields | We analyze condensation behaviors of neutral scalar fields outside
horizonless reflecting stars in the Einstein-Maxwell-scalar gravity. It was
known that minimally coupled neutral scalar fields cannot exist outside
horizonless reflecting stars. In this work, we consider non-minimal couplings
between scalar fields and M... | 1912.11989v2 |
2019-12-31 | Probing magnon-magnon coupling in exchange coupled Y$_3$Fe$_5$O$_{12}$/Permalloy bilayers with magneto-optical effects | We demonstrate the magnetically-induced transparency (MIT) effect in
Y$_3$Fe$_5$O$_{12}$(YIG)/Permalloy(Py) coupled bilayers. The measurement is
achieved via a heterodyne detection of the coupled magnetization dynamics using
a single wavelength that probes the magneto-optical Kerr and Faraday effects of
Py and YIG, res... | 1912.13407v2 |
2015-08-01 | Coupled symplectic maps as models for subdiffusive processes in disordered Hamiltonian lattices | We investigate dynamically and statistically diffusive motion in a chain of
linearly coupled 2-dimensional symplectic McMillan maps and find evidence of
subdiffusion in weakly and strongly chaotic regimes when all maps of the chain
possess a saddle point at the origin and the central map is initially excited.
In the ca... | 1508.00114v1 |
2015-08-04 | Strong-coupling electron-phonon superconductivity in noncentrosymmetric quasi-one-dimensional K$_2$Cr$_3$As$_3$ | I study the lattice dynamics and electron-phonon coupling in
non-centrosymmetric quasi-one-dimensional K$_2$Cr$_3$As$_3$ using density
functional theory based first principles calculations. The phonon dispersions
show stable phonons without any soft-mode behavior. They also exhibit features
that point to a strong inter... | 1508.00825v1 |
2015-08-13 | Synchronization and Anti-synchroniztion of Dynamically Coupled Networks | We consider the coupling between two networks, each having N nodes whose
individual dynamics is modeled by a two-state master equation. The
intra-network interactions are all to all, whereas the inter-network
interactions involve only a small percentage of the total number of nodes. We
demonstrate that the dynamics of ... | 1508.03270v1 |
2015-08-14 | Spiral wave chimeras in locally coupled oscillator systems | The recently discovered chimera state involves the coexistence of
synchronized and desynchronized states for a group of identical oscillators.
This fascinating chimera state has until now been found only in non-local or
globally coupled oscillator systems. In this work, we for the first time show
numerical evidence of ... | 1508.03407v1 |
2015-08-17 | The antiferromagnetic cross-coupled spin ladder: quantum fidelity and tensor networks approach | We investigate the phase diagram of the cross-coupled Heisenberg spin ladder
with antiferromagnetic couplings. For this model there have been conflicting
results for the existence of the columnar dimer phase, which was predicted on
the basis of weak coupling field theory renormalisation group arguments. The
numerical w... | 1508.03941v1 |
2015-08-17 | Strong Coupling Running, Gauge Coupling Unification and the Scale of New Physics | The apparent unification of gauge couplings in Grand Unified Theories around
10$^{16}$ GeV is one of the strong arguments in favor of Supersymmetric
extensions of the Standard Model. In this paper, an analysis of the
measurements of the strong coupling running from the CMS experiment at the LHC
is combined with a "trad... | 1508.04176v1 |
2015-08-19 | Effects of system-bath entanglement on the performance of light-harvesting systems: A quantum heat engine perspective | We explore energy transfer in a generic three-level system, which is coupled
to three non-equilibrium baths. Built on the concept of quantum heat engine,
our three-level model describes non-equilibrium quantum processes including
light-harvesting energy transfer, nano-scale heat transfer, photo-induced
isomerization, a... | 1508.04708v1 |
2015-08-20 | Superstrong Coupling of a Microwave Cavity to YIG Magnons | Multiple-post reentrant 3D lumped cavity modes have been realized to design
the concept of discrete Whispering Gallery and Fabry-Perot-like Modes for
multimode microwave Quantum Electrodynamics experiments. Using a magnon
spin-wave resonance of a submillimeter-sized Yttrium-Iron-Garnet sphere at
milliKelvin temperature... | 1508.04967v3 |
2015-08-26 | Transient Uncoupling Induces Synchronization | Finding conditions that support synchronization is a fertile and active area
of research with applications across multiple disciplines. Here we present and
analyze a scheme for synchronizing chaotic dynamical systems by transiently
uncoupling them. Specifically, systems coupled only in a fraction of their
state space m... | 1508.06545v1 |
2015-08-26 | Teleparallel quintessence with a nonminimal coupling to a boundary term | We propose a new model in the teleparallel framework where we consider a
scalar field nonminimally coupled to both the torsion $T$ and a boundary term
given by the divergence of the torsion vector $B=\frac{2}{e}\partial_\mu
(eT^\mu)$. This is inspired by the relation $R=-T+B$ between the Ricci scalar
of general relativ... | 1508.06580v4 |
2016-03-01 | Fermions in a mixed vector-scalar double-step potential via continuous chiral transformation | The behaviour of fermions in the background of a double-step potential is
analyzed with a general mixing of scalar and vector couplings via continuous
chiral-conjugation transformation. Provided the vector coupling does not exceed
the scalar coupling, a Sturm-Liouville approaching for the double-step
potential shows th... | 1603.00117v1 |
2016-03-02 | Higgs mass and unified gauge coupling in the NMSSM with Vector Matter | We consider the NMSSM extended to include one vector-like family of quarks
and leptons. If (some of) these vector-like matter particles, as the Higgs
doublets, have Yukawa couplings to the singlet S that exceed unity at about the
same scale $\Lambda \lesssim 10^3$ TeV, this gives the order 40 % enhancement
of the tree ... | 1603.00718v2 |
2016-03-02 | Twist-bend coupling and the torsional response of double-stranded DNA | Recent magnetic tweezers experiments have reported systematic deviations of
the twist response of double-stranded DNA from the predictions of the twistable
worm-like chain model. Here we show, by means of analytical results and
computer simulations, that these discrepancies can be resolved if a coupling
between twist a... | 1603.00835v2 |
2016-03-03 | Inferring causality from noisy time series data | Convergent Cross-Mapping (CCM) has shown high potential to perform causal
inference in the absence of models. We assess the strengths and weaknesses of
the method by varying coupling strength and noise levels in coupled logistic
maps. We find that CCM fails to infer accurate coupling strength and even
causality directi... | 1603.01155v1 |
2016-03-03 | Suppression of photon shot noise dephasing in a tunable coupling superconducting qubit | We demonstrate the suppression of photon shot noise dephasing in a
superconducting qubit by eliminating its dispersive coupling to the readout
cavity. This is achieved in a tunable coupling qubit, where the qubit frequency
and coupling rate can be controlled independently. We observe that the
coherence time approaches ... | 1603.01224v3 |
2016-03-04 | Strong Coupling in F-theory and Geometrically Non-Higgsable Seven-branes | Geometrically non-Higgsable seven-branes carry gauge sectors that cannot be
broken by complex structure deformation, and there is growing evidence that
such configurations are typical in F-theory. We study strongly coupled physics
associated with these branes. Axiodilaton profiles are computed using
Ramanujan's theorie... | 1603.01639v2 |
2016-03-08 | Layered frustrated antiferromagnetic Heisenberg spin model: role of inplane frustration and interlayer coupling | We present an exact diagonalization study on layered $J_{1}-J_{2}$
antiferromagnetic Heisenberg spin model to examine the role of frustration
induced by inplane next-nearest neighbor coupling $J_{2}$, in presence of
interlayer antiferromagnetic coupling $J_{\perp}$. A finite lattice of 24 spins
in layered geometry of $... | 1603.02601v2 |
2016-03-10 | Analysis and Design of Phase Desynchronization in Pulse-coupled Oscillators | By spreading phases on the unit circle, desynchronization algorithm is a
powerful tool to achieve round-robin scheduling, which is crucial in
applications as diverse as media access control of communication networks,
realization of analog-to-digital converters, and scheduling of traffic flows in
intersections. Driven b... | 1603.03313v1 |
2016-03-11 | Fluctuation theorem for entropy production of a partial system in the weak coupling limit | Small systems in contact with a heat bath evolve by stochastic dynamics. Here
we show that, when one such small system is weakly coupled to another one, it
is possible to infer the presence of such weak coupling by observing the
violation of the steady state fluctuation theorem for the partial entropy
production of the... | 1603.03506v2 |
2016-03-14 | Fast and High-Fidelity Entangling Gate through Parametrically Modulated Longitudinal Coupling | We investigate an approach to universal quantum computation based on the
modulation of longitudinal qubit-oscillator coupling. We show how to realize a
controlled-phase gate by simultaneously modulating the longitudinal coupling of
two qubits to a common oscillator mode. In contrast to the more familiar
transversal qub... | 1603.04424v3 |
2016-03-14 | Bifurcation of Transition Paths Induced by Coupled Bistable Systems | We discuss the transition paths in a coupled bistable system consisting of
interacting multiple identical bistable motifs. We propose a simple model of
coupled bistable gene circuits as an example, and show that its transition
paths are bifurcating. We then derive a criterion to predict the bifurcation of
transition pa... | 1603.04477v2 |
2016-03-21 | Weighted sampling without replacement | Comparing concentration properties of uniform sampling with and without
replacement has a long history which can be traced back to the pioneer work of
Hoeffding (1963). The goal of this short note is to extend this comparison to
the case of non-uniform weights, using a coupling between the two samples. When
the items' ... | 1603.06556v1 |
2016-03-28 | Wilson operator algebras and ground states for coupled BF theories | The multi-flavor $BF$ theories in (3+1) dimensions with cubic or quartic
coupling are the simplest topological quantum field theories that can describe
fractional braiding statistics between loop-like topological excitations
(three-loop or four-loop braiding statistics). In this paper, by canonically
quantizing these t... | 1603.08429v1 |
2015-07-24 | First-principles approach to the dynamic magnetoelectric couplings in BiFeO$_3$ | Despite its great technological importance, the magnetoelectric (ME)
couplings in \BF are barely understood. By using a first-principles approach,
we uncover the {\it dynamic} ME couplings of the long-range spin-cycloid in
BiFeO$_3$. Based on a microscopic Hamiltonian, our first-principles approach
disentangles the hid... | 1603.09576v1 |
2016-03-31 | Dirac Hamiltonian and Reissner-Nordstrom Metric: Coulomb Interaction in Curved Space-Time | We investigate the spin-1/2 relativistic quantum dynamics in the curved
space-time generated by a central massive charged object (black hole). This
necessitates a study of the coupling of a Dirac particle to the
Reissner-Nordstrom space-time geometry and the simultaneous covariant coupling
to the central electrostatic ... | 1603.09668v1 |
2016-10-03 | Gauge Coupling Unification with Hidden Photon, and Minicharged Dark Matter | We show that gauge coupling unification is realized with a greater accuracy
in the presence of a massless hidden photon which has a large kinetic mixing
with hypercharge. We solve the renormalization group equations at two-loop
level and find that the GUT unification scale is around $10^{16.5}$ GeV which
sufficiently s... | 1610.00631v2 |
2016-10-04 | Finite coupling effects in double quantum dots near equilibrium | A weak coupling quantum master equation provides reliable steady-state
results only in the van Hove limit, i.e., when the system-lead coupling
approaches zero. Recently, J. Thingna et al. [Phys. Rev. E 88, 052127 (2013)]
proposed an alternative approach, based on an analytic continuation of the
Redfield solution, to ev... | 1610.00866v3 |
2016-10-07 | DFT Simulations of Inter-Graphene-Layer Coupling with Rotationally Misaligned hBN Tunnel Barriers in Graphene/hBN/Graphene Tunnel FETs | Van der Waal's heterostrucutures allow for novel devices such as
two-dimensional-to-two-dimensional tunnel devices, exemplified by interlayer
tunnel FETs. These devices employ channel/tunnel-barrier/channel geometries.
However, during layer-by-layer exfoliation of these multi-layer materials,
rotational misalignment is... | 1610.02359v1 |
2016-10-07 | Interplay of Site and Bond Electron-Phonon Coupling in One Dimension | The interplay of bond and charge correlations is studied in a one-dimensional
model with both Holstein and Su-Schrieffer-Heeger (SSH) couplings to quantum
phonons. The problem is solved exactly by quantum Monte Carlo simulations. If
one of the couplings dominates, the ground state is a Peierls insulator with
long-range... | 1610.02426v3 |
2016-10-15 | Bloch Oscillations in Optical and Zeeman Lattices in the Presence of Spin-Orbit Coupling | We address Bloch oscillations of a spin-orbit coupled atom in periodic
potentials of two types: Optical and Zeeman lattices. We show that in optical
lattices the spin-orbit coupling allows controlling the direction of atomic
motion and may lead to complete suppression of the oscillations at specific
values of the coupl... | 1610.04716v2 |
2016-10-17 | Controlling energy transfer time between two coupled magnetic vortex-state disks | The influence of the in-plane uniaxial anisotropy (IPUA) in the mutual energy
transfer time ($\tau$) between two identical coupled nanodisks was studied.
Using an analytical dipolar model we obtained the interactions between the
disks along x and y directions (the coupling integrals) as a function of the
uniaxial aniso... | 1610.05109v1 |
2016-10-21 | Target decoupling in a coupled optical system resistant to random perturbation | To suppress unwanted crosstalks between nearby optical elements, the
decoupling technique for integrated systems has been desired for the target
control of light flows. Although cloaking methods have enabled complete
decoupling of optical elements by manipulating electromagnetic waves
microscopically, it is neither fea... | 1610.06687v1 |
2016-10-21 | Exact $\nabla^4 R^4$ couplings and helicity supertraces | In type II string theory compactified on a $d$-dimensional torus $T^d$ down
to $D=10-d$ dimensions, the $R^4$ and $\nabla^4 R^4$ four-graviton couplings
are known exactly, for all values of the moduli, in terms of certain Eisenstein
series of the U-duality group $E_{d}(\mathbb{Z})$. In the limit where one
circle in the... | 1610.06693v1 |
2016-10-24 | Regge meets collinear in strongly-coupled $\mathcal{N} = 4$ super Yang-Mills | We revisit the calculation of the six-gluon remainder function in planar
$\mathcal{N} = 4$ super Yang-Mills theory from the strong coupling TBA in the
multi-Regge limit and identify an infinite set of kinematically subleading
terms. These new terms can be compared to the strong coupling limit of the
finite-coupling exp... | 1610.07640v1 |
2016-10-28 | Pseudogap phenomena near the BKT transition of a two-dimensional ultracold Fermi gas in the crossover region | We investigate strong-coupling properties of a two-dimensional ultracold
Fermi gas in the normal phase. In the three-dimensional case, it has been shown
that the so-called pseudogap phenomena can be well described by a
(non-self-consistent) $T$-matrix approximation (TMA). In the two-dimensional
case, while this strong ... | 1610.09116v1 |
2016-12-02 | Unifying quantum heat transfer in a nonequilibrium spin-boson model with full counting statistics | To study the full counting statistics of quantum heat transfer in a driven
nonequilibrium spin-boson model, we develop a generalized nonequilibrium
polaron-transformed Redfield equation with an auxiliary counting field. This
enables us to study the impact of qubit-bath coupling ranging from weak to
strong regimes. With... | 1612.00533v2 |
2016-12-07 | Exotic surface states in hybrid structures of topological insulators and Weyl semimetals | Topological insulators (TIs) and Weyl semimetals (WSMs) are two realizations
of topological matter usually appearing separately in nature. However, they are
directly related to each other via a topological phase transition. In this
paper, we investigate the question whether these two topological phases can
exist togeth... | 1612.02176v2 |
2016-12-07 | Cosmological evolution of Yukawa couplings: the 5D perspective | The cosmological evolution of standard model Yukawa couplings may have major
implications for baryogenesis. In particular, as highlighted recently, the CKM
matrix alone could be the source of CP-violation during electroweak
baryogenesis provided that the Yukawa couplings were large and varied during
the electroweak pha... | 1612.02447v1 |
2016-12-12 | Preconditioning trace coupled 3$d$-1$d$ systems using fractional Laplacian | Multiscale or multiphysics problems often involve coupling of partial
differential equations posed on domains of different dimensionality. In this
work we consider a simplified model problem of a 3d-1d coupling and the main
objective is to construct algorithms that may utilize stan- dard multilevel
algorithms for the 3... | 1612.03574v2 |
2016-12-12 | Triple Gauge Couplings at Future Hadron and Lepton Colliders | The $WW$ production is the primary channel to directly probe the triple gauge
couplings. We analyze the $e^+ e^- \rightarrow W^+ W^-$ process at the proposed
Circular Electron-Positron Collider (CEPC), and find that the anomalous triple
gauge couplings and relevant dimension six operators can be probed up to the
order ... | 1612.03888v1 |
2016-12-15 | Coupling-Enhanced Broadband Mid-Infrared Light Absorption in Graphene Plasmonic Nanostructures | Plasmons in graphene nanostructures show great promise for mid-infrared
applications ranging from a few to tens of microns. However, mid-infrared
plasmonic resonances in graphene nanostructures are usually weak and
narrow-banded, limiting their potential in light manipulation and detection.
Here we investigate the coup... | 1612.05119v1 |
2016-12-15 | Maximizing optomechanical entanglement with optimal control | In this article, we formulate the generation of optomechanical entanglement
between the linearly coupled cavity field and the mechanical resonator as an
optimal control problem in hyperbolic space $H^3$, with control input the
coupling rate of the two oscillators. Next, we use optimal control theory to
find the allowed... | 1612.05144v1 |
2016-12-15 | Strong coupling between an electron in a quantum dot circuit and a photon in a cavity | Circuit quantum electrodynamics allows one to probe, manipulate and couple
superconducting quantum bits using cavity photons at an exquisite level. One of
its cornerstones is the possibility to achieve the strong coupling which allows
one to hybridize coherently light and matter. Its transposition to quantum dot
circui... | 1612.05214v1 |
2016-12-15 | Learning Optimal Control of Synchronization in Networks of Coupled Oscillators using Genetic Programming-based Symbolic Regression | Networks of coupled dynamical systems provide a powerful way to model systems
with enormously complex dynamics, such as the human brain. Control of
synchronization in such networked systems has far reaching applications in many
domains, including engineering and medicine. In this paper, we formulate the
synchronization... | 1612.05276v2 |
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