Article
Optics
Shengjie Wu, Wange Song, Zhiyuan Lin, Chen Chen, Shining Zhu, Tao LI
Summary: This study demonstrates the possibility of generating nontrivial Floquet topological phase and photonic rt modes through long-range coupling in a one-dimensional periodically driven optical lattice. Analyzing the replica bands, we reveal the quasienergies band crossing and reopening of new nontrivial rt gaps due to the long-range coupling. These results offer a new route in manipulating optical topological modes by Floquet engineering with long-range coupling.
Article
Physics, Multidisciplinary
Javad Kazemi, Hendrik Weimer
Summary: This study theoretically analyzes the steady state of a van der Waals interacting Rydberg gas in an optical lattice, with a focus on the physics of the Rydberg blockade. The research finds that, under sufficiently strong dephasing, the steady state undergoes a first order phase transition from a blockaded Rydberg gas to a facilitation phase where the blockade is lifted. This transition terminates in a critical point, offering a promising route to investigate dissipative criticality in these systems.
PHYSICAL REVIEW LETTERS
(2023)
Article
Physics, Fluids & Plasmas
Ross Parker, Alejandro Aceves, Jesus Cuevas-Maraver, P. G. Kevrekidis
Summary: In this work, a topological two-dimensional lattice with periodically time-dependent interactions is revisited, identifying fundamental solitons and analyzing their Floquet stability. Multisoliton analogs show different stability properties.
Article
Mathematics, Interdisciplinary Applications
Qian Tang, Yiqi Zhang, Yaroslav V. Kartashov, Yongdong Li, Vladimir V. Konotop
Summary: Topological edge solitons, inheriting topological protection and exhibiting robustness to disorder and defects, attract significant attention in the field of topological photonics. In this study, diverse types of vector valley Hall edge solitons are observed at the domain walls between superhoneycomb lattices, showcasing their stability and ability to bypass sharp bends. The results highlight the richness of soliton families in valley Hall systems and offer prospects for light field manipulation and design of nonlinear topological functional devices.
CHAOS SOLITONS & FRACTALS
(2022)
Article
Nanoscience & Nanotechnology
Subhaskar Mandal, Gui-Geng Liu, Baile Zhang
Summary: We study a photonic lattice system where a coherent drive is applied to nonlinear lossy resonators. The system initially has a trivial topology but undergoes a topological phase transition after the application of an additional coherent pulse, which modifies the system's couplings. Interestingly, even after the pulse dies out, the system retains the acquired topological phase, acting as a trigger for amplifying topological modes with frequency conversion and intensity transfer. Our findings have implications for active topological photonic devices.
Article
Optics
Vaibhav Sharma, Erich J. Mueller
Summary: The study introduces a set of driven-dissipative protocols for controlling cold atoms in tilted optical lattices and showcases how dissipation can manipulate quantum many-body systems. By employing a specific experimental setup, the research team successfully achieved controllable atom transport in the lattice and generation of self-healing quantum states.
Article
Materials Science, Multidisciplinary
Xiu-Li Du, Rui Chen, Rui Wang, Dong-Hui Xu
Summary: In this study, we investigated the tunable Floquet states in a periodically driven higher-order nodal-line semimetal with both spatial inversion and time-reversal symmetries. We found that circularly polarized light can induce Floquet Weyl semimetal states in the higher-order nodal-line semimetal and that the location of Weyl nodes and the curvature of surface Fermi arcs can be tuned by adjusting the propagation direction and incident angle of light.
Article
Optics
Zhaoyuan Wang, Wenjin Ma, Yi Hu, Zhigang Chen, Jingjun Xu
Summary: This study demonstrates interface states between two Floquet-driven photonic lattices with opposite chirality, and investigates their properties and characteristics. Unexpected localized behaviors were observed experimentally, and a continuum model provided a clearer explanation for these behaviors.
Article
Materials Science, Multidisciplinary
Ying Yang, Yang Xiao, C. -M. Hu
Summary: Coherent magnon-photon coupling under the Floquet drive has been investigated theoretically. It is found that the Floquet states with dissipative coupling lead to many level attractions in the transmission spectrum. The interference of coherent and dissipative couplings results in a series of sharp dips, in contrast to a single dip with zero damping in previous work.
Review
Physics, Condensed Matter
Takashi Mori
Summary: In Floquet engineering, periodic driving is used to explore new phases of matter that cannot be accessed in thermal equilibrium. The Floquet theory provides a method for obtaining a static effective Hamiltonian. While many studies have focused on closed systems, it is important to consider the effect of dissipation, which is prevalent in nature. This review discusses the formalism of quantum master equations for open Floquet systems and recent investigations on the applicability of equilibrium statistical mechanics to Floquet states.
ANNUAL REVIEW OF CONDENSED MATTER PHYSICS
(2023)
Article
Physics, Fluids & Plasmas
P. M. Pasinetti, A. J. Ramirez-Pastor, E. E. Vogel
Summary: By combining Monte Carlo simulations and thermodynamic integration method, this study investigates the configurational entropy of straight rigid rods adsorbed on three-dimensional lattices. Different phase diagrams are obtained based on the lengths of the rods. The results provide numerical validation of a recent analytical prediction and support the superuniversality of entropy behavior on hypercubical lattices.
Article
Chemistry, Physical
Marco Schiro, Florian G. Eich, Federica Agostini
Summary: The trajectory-based approach developed for excited-state molecular dynamics simulations of systems subject to an external periodic drive combines exact-factorization formalism with the Floquet formalism. This approach approximates quantum dynamics by combining classical-like, trajectory-based, nuclear evolution with electronic dynamics represented in the Floquet basis. The resulting algorithm, an extension of the coupled-trajectory mixed quantum-classical scheme, has been successfully applied to a model study with different field intensities.
JOURNAL OF CHEMICAL PHYSICS
(2021)
Article
Quantum Science & Technology
Yiying Yan, Zhiguo Lu, Lipeng Chen, Hang Zheng
Summary: In this study, the resonance and dynamics of a qubit under the influence of a strong aperiodic bichromatic field are investigated using a periodic counter-rotating hybridized rotating wave (CHRW) Hamiltonian. The results show that the CHRW method is consistent with the numerically exact generalized-Floquet-theory (GFT) results within a valid regime. The study also reveals the notable Bloch-Siegert shifts induced by the counter-rotating couplings of the bichromatic field at the multiphoton resonance band.
ADVANCED QUANTUM TECHNOLOGIES
(2023)
Article
Optics
Viktor Novicenko, Giedrius Zlabys, Egidijus Anisimovas
Summary: This article applies the method of flow equations to study quantum systems subject to a time-periodic drive with a time-dependent envelope. By introducing an auxiliary flow variable, the evolution of the system and the conversion of energy levels are implemented.
Article
Physics, Multidisciplinary
Jesus Mateos, Charles E. Creffield, Fernando Sols
Summary: We theoretically investigate the superfluidity of a one-dimensional boson system with periodically modulated hopping energy. The system exhibits novel superfluid features such as a cat-like ground state and interference between the ground-state wave function components. The dynamics of this system is driven by correlations and described by exotic Hamiltonian and current operators. Calculation of the dynamic form factor reveals the presence of an acoustic mode that guarantees superfluidity in the thermodynamic limit.
NEW JOURNAL OF PHYSICS
(2023)
Article
Physics, Particles & Fields
Tigran A. Sedrakyan, Hrachya M. Babujian
Summary: In this study, a set of non-stationary quantum models are considered. It is shown that their dynamics can be studied by linking them to Knizhnik-Zamolodchikov (KZ) equations for correlation functions in conformal field theories. The boundary Wess-Zumino-Novikov-Witten model is specifically explored, where equations for correlators of primary fields are defined by an extension of KZ equations, revealing the connections to dynamical systems. As an example, an exact solution to a dynamical system that is a specific multi-level generalization of the two-level Landau-Zenner system, known as the Demkov-Osherov model, is provided to demonstrate the feasibility of the proposed method. The method can be used to study the nonequilibrium dynamics in various multi-level systems from the solution of the corresponding KZ equations.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Multidisciplinary Sciences
Rui Wang, Tigran A. Sedrakyan, Baigeng Wang, Lingjie Du, Rui-Rui Du
Summary: Correlation and frustration are important in physics, leading to new quantum phases. In this study, we observe the moat-band phenomena in shallowly inverted InAs/GaSb quantum wells, where we find an unconventional time-reversal-symmetry breaking excitonic ground state. We demonstrate the evolution from helical-like to chiral-like edge transport and explain our experimental observations using a moat band for excitons that results from density imbalance.
Article
Materials Science, Multidisciplinary
Rui Wang, Z. Y. Xie, Baigeng Wang, Tigran Sedrakyan
Summary: Topological phase transitions involving intrinsic topological orders cannot be described by conventional mean-field theories, but lattice Chern-Simons theory shows that traditional concepts can still play a crucial role in certain cases, while simplifying the transitions to effective mean-field theories based on fermionic degrees of freedom.
Article
Materials Science, Multidisciplinary
Ke Wang, T. A. Sedrakyan
Summary: Perpendicular magnetic field introduces an anomalous interaction correction to the static conductivity of doped graphene, leading to a proportional relationship between magnetoresistance and inverse temperature. This behavior originates from field-induced breaking of symmetry.
Article
Materials Science, Multidisciplinary
Ke Wang, M. E. Raikh, T. A. Sedrakyan
Summary: The presence of a weak perpendicular magnetic field in graphene breaks the chiral symmetry of each valley in the electron spectrum, leading to anomalous dependencies in the electron-electron interaction lifetime and magnetic field corrections to the thermodynamic characteristics. Experiments are discussed to explore the effects predicted by this symmetry breaking.
Article
Materials Science, Multidisciplinary
Ke Wang, M. E. Raikh, T. A. Sedrakyan
Summary: The study shows that the opposite chiralities of Dirac electrons in graphene significantly modify the Friedel oscillations, with a weak uniform magnetic field having an anomalous effect on the oscillations. This field-dependent contribution in a large spatial interval does not decay with distance, originating from a spin-dependent magnetic phase accumulated by the electron propagator.
Article
Optics
Chenan Wei, Tigran A. Sedrakyan
Summary: The SYK model's tractability at the large N limit allows for theoretical study of its chaotic behavior and holographic duality properties. The proposed setup provides a platform to realize the SYK model and investigate its exotic behavior using released fermion velocity distribution and many-body Loschmidt echo scheme.
Article
Materials Science, Multidisciplinary
Tigran A. Sedrakyan, Konstantin B. Efetov
Article
Materials Science, Multidisciplinary
Tigran Sedrakyan, Roderich Moessner, Alex Kamenev
Article
Materials Science, Multidisciplinary
Ke Wang, T. A. Sedrakyan
Article
Materials Science, Multidisciplinary
Saurabh Maiti, Tigran A. Sedrakyan
Article
Materials Science, Multidisciplinary
Saurabh Maiti, Tigran Sedrakyan
Article
Materials Science, Multidisciplinary
Rui Wang, Baigeng Wang, Tigran A. Sedrakyan
Article
Materials Science, Multidisciplinary
Tigran A. Sedrakyan, Konstantin B. Efetov
Article
Materials Science, Multidisciplinary
Tigran A. Sedrakyan, Victor M. Galitski, Alex Kamenev