850 citations · 1.8k across the 20 of their papers we have counts for
20 papers
Spectral Topology and Non-Bloch Band Theory for Domain-Wall Systems
Mingtao Xu, Rui Wang, Tian-Shu Deng +1
We study the spectral topology of one-dimensional non-Hermitian models in a domain-wall configuration, where different domains are arranged in a ring geometry. While eigenstates ca…
Topologically protected boundary discrete time crystal for a solvable model
Peng Xu, Tian-Shu Deng
Floquet time crystal, which breaks discrete time-translation symmetry, is an intriguing phenomenon in non-equilibrium systems. It is crucial to understand the rigidity and robustne…
Boundary Condition Independence of Non-Hermitian Hamiltonian Dynamics
Liang Mao, Tianshu Deng, Pengfei Zhang
Non-Hermitian skin effect, namely that the eigenvalues and eigenstates of a non-Hermitian tight-binding Hamiltonian have significant differences under open or periodic boundary con…
Fate of symmetry protected coherence in open quantum system
Tian-Shu Deng, Lei Pan
We investigate the fate of coherence in the dynamical evolution of a symmetry protected quantum system. Under the formalism of system-plus-bath for open quantum system, the anti-un…
Stability of Time-Reversal Symmetry Protected Topological Phases
Tian-Shu Deng, Lei Pan, Yu Chen +1
In a closed system, it is well known that the time-reversal symmetry can lead to Kramers degeneracy and protect nontrivial topological states such as quantum spin Hall insulator. I…
Periodic driving induced helical Floquet channels with ultracold atoms in momentum space
Teng Xiao, Dizhou Xie, Wei Gou +4
Employing the external degrees of freedom of atoms as synthetic dimensions renders easy and new accesses to quantum engineering and quantum simulation. As a recent development, ult…
Observation of non-Bloch parity-time symmetry and exceptional points
Lei Xiao, Tianshu Deng, Kunkun Wang +3
Parity-time (PT)-symmetric Hamiltonians have widespread significance in non-Hermitian physics. A PT-symmetric Hamiltonian can exhibit distinct phases with either real or complex ei…
Density Dependent Spin-Orbit Coupling in Degenerate Quantum Gases
Peng Xu, Tianshu Deng, Wei Zheng +1
In this letter we propose a method to realize a kind of spin-orbit coupling in ultracold Bose and Fermi gases whose format and strength depend on density of atoms. Our method combi…
Tunable non-reciprocal quantum transport through a dissipative Aharonov-Bohm ring in ultracold atoms
Wei Gou, Tao Chen, Dizhou Xie +5
We report the experimental observation of tunable, non-reciprocal quantum transport of a Bose-Einstein condensate in a momentum lattice. By implementing a dissipative Aharonov-Bohm…
Observation of non-Hermitian bulk-boundary correspondence in quantum dynamics
Lei Xiao, Tianshu Deng, Kunkun Wang +4
Bulk-boundary correspondence, a central principle in topological matter relating bulk topological invariants to edge states, breaks down in a generic class of non-Hermitian systems…
Topological quantum walks in momentum space with a Bose-Einstein condensate
Dizhou Xie, Tian-Shu Deng, Teng Xiao +4
We report the experimental implementation of discrete-time topological quantum walks of a Bose-Einstein condensate in momentum space. Introducing stroboscopic driving sequences to…
Non-Bloch topological invariants in a non-Hermitian domain-wall system
Tian-Shu Deng, Wei Yi
We study non-Bloch bulk-boundary correspondence in a non-Hermitian Su-Schieffer-Heeger model in a domain-wall configuration where the left and right bulks have different parameters…
Dressing the Orbital Feshbach Resonance using single-manifold Raman scheme
Zhen Han, Tian-Shu Deng
The recently discovered Orbital Feshbach Resonance (OFR) offers the possibility of tuning the interaction between alkaline earth(-like) metal atoms with magnetic field. Here, we in…
Fixed points and emergent topological phenomena in a parity-time-symmetric quantum quench
Xingze Qiu, Tian-Shu Deng, Ying Hu +2
We identify emergent topological phenomena such as dynamic Chern numbers and dynamic quantum phase transitions in quantum quenches of the non-Hermitian Su-Schrieffer-Heeger Hamilto…
Dynamical topological invariants and reduced rate functions for dynamical quantum phase transitions in two dimensions
Xingze Qiu, Tian-Shu Deng, Guang-Can Guo +1
We show that dynamical quantum phase transitions (DQPTs) in the quench dynamics of two-dimensional topological systems can be characterized by a dynamical topological invariant def…
Repulsive polarons in alkaline-earth(-like) atoms across an orbital Feshbach resonance
Tian-Shu Deng, Zhuo-Cheng Lu, Yue-Ran Shi +3
We characterize properties of the so-called repulsive polaron across the recently discovered orbital Feshbach resonance in alkaline-earth(-like) atoms. Being a metastable quasipart…
Tuning Feshbach resonance in cold atomic gases with inter-channel coupling
Tian-Shu Deng, Wei Zhang, Wei Yi
We show that the essential properties of a Feshbach resonance in cold atomic gases can be tuned by dressing the atomic states in different scattering channels through inter-channel…
Polarons and Molecules in a Fermi Gas with Orbital Feshbach Resonance
Jin-Ge Chen, Tian-Shu Deng, Wei Yi +1
We study the impurity problem in a gas of Yb atoms near the recently discovered orbital Feshbach resonance. In an orbital Feshbach resonance, atoms in the electronic ground…
Quench dynamics of a Bose-Einstein condensate under synthetic spin-orbit coupling
Tian-Shu Deng, Wei Zhang, Wei Yi +1
We study the quench dynamics of a Bose-Einstein condensate under a Raman-assisted synthetic spin-orbit coupling. To model the dynamical process, we adopt a self-consistent Bogoliub…
BCS-BEC crossover and quantum phase transition in an ultracold Fermi gas under spin-orbit coupling
Fan Wu, Ren Zhang, Tian-Shu Deng +3
In this work, we study the BCS-BEC crossover and quantum phase transition in a Fermi gas under Rashba spin-orbit coupling close to a Feshbach resonance. By adopting a two-channel m…