86 citations · 381 across the 21 of their papers we have counts for
21 papers
Stable real-energy spectral dynamics with topological transitions and non-Hermitian many-body localization
Shujie Cheng, Xixi Feng, Wen Chen +2
In this work, the interplay between non-Hermiticity, quasi-disorder, and repulsive interaction is studied for hard-core bosons confined in a one-dimensional optical lattice, where…
Anomalous correlation-induced dynamical phase transitions
Niaz Ali Khan, Pei Wang, Munsif Jan +1
The nonanalyticity of the Loschmidt echo at critical times in quantum quenched systems is termed as the dynamical quantum phase transition, extending the notion of quantum critical…
A rotational-cavity optomechanical system with two revolving cavity mirrors: optical response and fast-slow light mechanism
Amjad Sohail, Rameesa Arif, Naeem Akhtar +4
We investigate the optical behavior of a single Laguerre-Gaussian cavity optomechanical system consisting of two mechanically rotating mirrors. We explore the effects of various ph…
From topological phase to Anderson localization in a two-dimensional quasiperiodic system
Shujie Cheng, Reza Asgari, Gao Xianlong
In this paper, the influence of the quasidisorder on a two-dimensional system is studied. We find that there exists a topological phase transition accompanied by a transverse Ander…
Breakdown of the correspondence between the real-complex and delocalization-localization transitions in non-Hermitian quasicrystals
Wen Chen, Shujie Cheng, Ji Lin +2
The correspondence between the real-complex transition in energy and delocalization-localization transition is well-established in a class of Aubry-Andr'e-Harper model with exponen…
Sub-Planck phase-space structure and sensitivity for SU(1,1) compass states
Naeem Akhtar, Barry C. Sanders, Gao Xianlong
We investigate the sub-Planck-scale structures associated with the SU(1,1) group by establishing that the Planck scale on the hyperbolic plane can be considered as the inverse of t…
Topological Floquet-bands in a circularly shaken dice lattice
Shujie Cheng, Gao Xianlong
The hoppings of non-interacting particles in the optical dice lattice result in the gapless dispersions in the band structure formed by the three lowest minibands. In our research,…
Impurity induced quantum chaos for an ultracold bosonic ensemble in a double-well
Jie Chen, Kevin Keiler, Gao Xianlong +1
We demonstrate that an ultracold many-body bosonic ensemble confined in a one-dimensional (1D) double-well (DW) potential can exhibit chaotic dynamics due to the presence of a sing…
Fate of Majorana zero modes, critical states and non-conventional real-complex transition in non-Hermitian quasiperiodic lattices
Tong Liu, Shujie Cheng, Hao Guo +1
We study a one-dimensional -wave superconductor subject to non-Hermitian quasiperiodic potentials. Although the existence of the non-Hermiticity, the Majorana zero mode is still…
Large Chern numbers in a dissipative dice model
Shujie Cheng, Gao Xianlong
For decades, the topological phenomena in quantum systems have always been catching our attention. Recently, there are many interests on the systems where topologically protected e…
Metal-insulator phase transition and topology in a three-component system
Shujie Cheng, Gao Xianlong
In the framework of the tight binding approximation, we study a non-interacting model on the three-component dice lattice with real nearest-neighbor and complex next-nearest-neighb…
Predicting Large-Chern-Number Phases in a Shaken Optical Dice Lattice
Shujie Cheng, Honghao Yin, Zhanpeng Lu +3
With respect to the quantum anomalous Hall effect (QAHE), the detection of topological nontrivial large-Chern-number phases is an intriguing subject. Motivated by recent research o…
Characterization of many-body mobility edges with random matrices
Xingbo Wei, Rubem Mondaini, Gao Xianlong
Whether the many-body mobility edges can exist in a one-dimensional interacting quantum system is a controversial problem, mainly hampered by the limited system sizes amenable to n…
Two-photon statistics of nonclassical radiation in the dissipative finite-size Dicke model
Heguang Xu, Chen Wang, Xianlong Gao
The nonclassical feature of photons in the open finite-size Dicke model is investigated via the two-photon correlation function. The quantum dressed master equation combined with t…
Numerical Approach to the Evolution of the Spin-boson Systems and its Application on the Buck-Sukumar Model
Xueying Liu, Xuezao Ren, Chen Wang +2
We present a systematic numerical iteration approach to study the evolution properties of the spin-boson systems, which works well in whole coupling regime. This approach involves…
Thermal rectification and heat amplification in a nonequilibrium V-type three-level system
Chen Wang, Dazhi Xu, Huan Liu +1
Thermal rectification and heat amplification are investigated in a nonequilibrium V-type three-level system with quantum interference. By applying the Redfield master equation comb…
Tunable spinful matter wave valve
Yan-Jun Zhao, Dongyang Yu, Lin Zhuang +1
We investigate the transport problem that a spinful matter wave is incident on a strong localized spin-orbit-coupled Bose-Einstein condensate in optical lattices, where the localiz…
Connecting dynamical quantum phase transitions and topological steady-state transitions by tuning the energy gap
Pei Wang, Gao Xianlong
Considerable theoretical and experimental efforts have been devoted to the quench dynamics, in particular, the dynamical quantum phase transition (DQPT) and the steady-state transi…
Continuum Mechanics for Quantum Many-Body Systems: The Linear Response Regime
Xianlong Gao, Jianmin Tao, G. Vignale +1
We derive a closed equation of motion for the current density of an inhomogeneous quantum many-body system under the assumption that the time-dependent wave function can be describ…
Linear Continuum Mechanics for Quantum Many-Body Systems
Jianmin Tao, Xianlong Gao, G. Vignale +1
We develop the continuum mechanics of quantum many-body systems in the linear response regime. The basic variable of the theory is the displacement field, for which we derive a clo…
Bethe-Ansatz density-functional theory of ultracold repulsive fermions in one-dimensional optical lattices
Gao Xianlong, Marco Polini, M. P. Tosi +3
We present an extensive numerical study of ground-state properties of confined repulsively interacting fermions on one-dimensional optical lattices. Detailed predictions for the at…