54 citations · 356 across the 30 of their papers we have counts for
22 papers · 1 filter
Interaction between an impurity and nonlinear excitations in a polariton condensate
Chunyu Jia, Zhaoxin Liang
Exploring the dynamics of a mobile impurity immersed in the field excitations is challenging, as it requires to account for the entanglement between the impurity and the surroundin…
Hierarchical dimensional crossover of an optically-trapped quantum gas with disorder
KangKang Li, Zhaoxin Liang
Dimensionality serves as an indispensable ingredient in any attempt to formulate the low-dimensional physics, and studying the dimensional crossover at a fundamental level is chall…
Drag force of a exciton-polariton condensate under non-resonant pumping
Peisong He, Zhaoxin Liang
Exciton-polariton condensate in semiconductor microcavities constitute a novel kind of non-equilibrium superfluid. In a recent experiment [P. Stepanov, {\it et. al.,} Nat. Commun.…
The non-Hermitian geometrical property of 1D Lieb lattice under Majorana's stellar representation
Xingran Xu, Haodi Liu, Zhidong Zhang +1
The topological properties of non-Hermitian Hamiltonian is a hot topic, and the theoretical studies along this research line are usually based on the two-level non-Hermitian Hamilt…
Nonequilibrium Landau-Zener Tunneling in Exciton-Polariton Condensates
Xingran Xu, Zhidong Zhang, Zhaoxin Liang
For a coherent quantum mechanical two-level system driven with a linearly time-dependent detuning, the Landau-Zener model has served over decades as a textbook model of quantum dyn…
Dissipative Magnetic Polariton Soliton
Chunyu Jia, Rukuan Wu, Ying Hu +2
Dissipative solitons are non-decaying out-of-equilibrium entities that result from double balances between gain and loss, as well as nonlinearity and dispersion. Here we describe a…
Tail-free self-accelerating solitons and vortices
Jieli Qin, Zhaoxin Liang, Boris A. Malomed +1
Self-accelerating waves in conservative systems, which usually feature slowly decaying tails, such as Airy waves, have drawn great interest in studies of quantum and classical wave…
Steady-state phase diagram of quantum gases in a lattice coupled to a membrane
Chao Gao, Zhaoxin Liang
In a recent experiment [Vochezer {\it et al.,} Phys. Rev. Lett. \textbf{120}, 073602 (2018)], a novel kind of hybrid atom-opto-mechanical system has been realized by coupling atoms…
Dark-bright solitons in spinor polariton condensates under nonresonant pumping
Xingran Xu, Lei Chen, Zhidong Zhang +1
Adopting a mean-field Gross-Pitaevskii description for a spinor polariton Bose-Einstein condensates under non-resonant pumping, we investigate the static and dynamical properties o…
Beliaev Damping in Spin- Interacting Bosons with Spin-Orbit Coupling
Rukuan Wu, Zhaoxin Liang
Beliaev damping provides one of the most important mechanisms for dissipation of quasiparticles through beyond-mean-field effects at zero temperature. Here we present the first ana…
Spinor polariton condensates under nonresonant pumping: Steady states and elementary excitations
Xingran Xu, Ying Hu, Zhidong Zhang +1
We theoretically investigate a spinor polariton condensate under nonresonant pumping, based on driven-dissipative Gross-Pitaevskii equations coupled to the rate equation of a spin-…
Non-equilibrium dynamics of an ultracold Bose gas under a multi-pulsed quantum quench in interaction
Lei Chen, Zhidong Zhang, Zhaoxin Liang
We investigate the nonequilibrium dynamical properties of a weakly-interacting Bose gas at zero temperature under the multi-pulsed quantum quench in interaction by calculating one-…
Unusual behavior of sound velocity of a Bose gas in an optical superlattice at quasi-one-dimension
Lei Chen, Zhu Chen, Wu Li +2
A Bose gas trapped in a one-dimensional optical superlattice has emerged as a novel superfluid characterized by tunable lattice topologies and tailored band structures. In this wor…
Probing Sound Speed of an Optically-Trapped Bose Gas with Periodically Modulated Interactions by Bragg Spectroscopy
Lei Chen, Wu Li, Zhu Chen +2
A Bose-Einstein condensate (BEC) with periodically modulated interactions (PMI) has emerged as a novel kind of periodic superfluid, which has been recently experimentally created u…
Quench Dynamics of Three-Dimensional Disordered Bose Gases: Condensation, Superfluidity and Fingerprint of Dynamical Bose Glass
Lei Chen, Zhaoxin Liang, Ying Hu +1
In an equilibrium three-dimensional (3D) disordered condensate, it's well established that disorder can generate an amount of normal fluid equaling to of the condensa…
Probing the Flat Band of Optically-Trapped Spin-Orbital Coupled Bose Gases Using Bragg Spectroscopy
Wu Li, Lei Chen, Zhu Chen +3
Motivated by the recent efforts in creating the flat band in ultracold atomic systems, we investigate how to probe the flat band in an optically-trapped spin-orbital coupled Bose-E…
Visualization of Dimensional Effects in Collective Excitations of Optically Trapped Quasi-Two-Dimensional Bose Gases
Ying Hu, Zhaoxin Liang
We analyze the macroscopic dynamics of a Bose gas axially confined in an optical lattice with a superimposed harmonic trap, taking into account weak tunneling effect. Our results s…
Optically trapped quasi-two-dimensional Bose gases in random environment: quantum fluctuations and superfluid density
Kezhao Zhou, Ying Hu, Zhaoxin Liang +1
We investigate a dilute Bose gas confined in a tight one-dimensional (1D) optical lattice plus a superimposed random potential at zero temperature. Accordingly, the ground state en…
Collective excitations of a trapped Bose-Einstein condensate in the presence of weak disorder and a two-dimensional optical lattice
Ying Hu, Zhaoxin Liang, Bambi Hu
We investigate the combined effects of weak disorder and a two-dimensional (2D) optical lattice on the collective excitations of a harmonically trapped Bose-Einstein condensate (BE…
Effects of disorder on quantum fluctuations and superfluid density of a Bose-Einstein condensate in a two-dimensional optical lattice
Ying Hu, Zhaoxin Liang, Bambi Hu
We investigate a Bose-Einstein condensate trapped in a 2D optical lattice in the presence of weak disorder within the framework of the Bogoliubov theory. In particular, we analyze…
Gap Solitons and Bloch Waves in Nonlinear Periodic Systems
Yongping Zhang, Zhaoxin Liang, Biao Wu
We comprehensively investigate gap solitons and Bloch waves in one-dimensional nonlinear periodic systems. Our results show that there exists a composition relation between them: B…
Exact nonlinear Bloch-state solutions for Bose-Einstein condensates in a periodic array of quantum wells
Rui Xue, Z. X. Liang, Weidong Li
A set of exact closed-form Bloch-state solutions to the stationary Gross-Pitaevskii equation are obtained for a Bose-Einstein condensate in a one-dimensional periodic array of quan…