279 citations · 822 across the 22 of their papers we have counts for
22 papers
Reentrant Localization Transitions in a Topological Anderson Insulator: A Study of a Generalized Su-Schrieffer-Heeger Quasicrystal
Zhanpeng Lu, Yunbo Zhang, Zhihao Xu
We study the topology and localization properties of a generalized Su-Schrieffer-Heeger (SSH) model with a quasi-periodic modulated hopping. It is found that the interplay of off-d…
From Ergodicity to Many-Body Localization in a One-Dimensional Interacting Non-Hermitian Stark System
Jinghu Liu, Zhihao Xu
Recent studies on disorder-induced many-body localization (MBL) in non-Hermitian quantum systems have attracted great interest. However, the non-Hermitian disorder-free MBL still n…
Characterizations for the existence of traces of first-order Sobolev spaces on hyperbolic fillings
Manzi Huang, Zhihao Xu
In this paper, we study the existence of traces for Sobolev spaces on the hyperbolic filling of a compact metric space equipped with a doubling measure. Given a suitable me…
Exact Mobility edges and topological Anderson insulating phase in a slowly varying quasiperiodic model
Zhanpeng Lu, Zhihao Xu, Yunbo Zhang
We uncover the relationship of topology and disorder in a one-dimensional Su-Schrieffer-Heeger chain subjected to a slowly varying quasi-periodic modulation. By numerically calcula…
Non-Hermitian Aubry-André model with Power-Law Hopping
Zhihao Xu, Xu Xia, Shu Chen
We study a non-Hermitian AA model with long-range hopping, , and different choices of quasiperiodic parameters to be a member of the metallic mean family. We find that w…
Exact Mobility Edges and Topological Phase Transition in Two-Dimensional non-Hermitian Quasicrystals
Zhihao Xu, Xu Xia, Shu Chen
The emergence of the mobility edge (ME) has been recognized as an important characteristic of Anderson localization. The difficulty in understanding the physics of the MEs in three…
Dynamical evolution in a one-dimensional incommensurate lattice with symmetry
Zhihao Xu, Shu Chen
We investigate the dynamical evolution of a parity-time () symmetric extension of the Aubry-André (AA) model, which exhibits the coincidence of a localization-delocal…
Topological Bose-Mott insulators in one-dimensional non-Hermitian superlattices
Zhihao Xu, Shu Chen
We study the topological properties of Bose-Mott insulators in one-dimensional non-Hermitian superlattices, which may serve as effective Hamiltonians for cold atomic optical system…
Fate of zero modes in a finite Su-Schrieffer-Heeger Model with Symmetry
Zhihao Xu, Rong Zhang, Shu Chen +2
Due to the boundary coupling in a finite system, the zero modes of a standard Su-Schrieffer-Heeger (SSH) model may deviate from exact-zero energy. A recent experiment has shown tha…
Dynamical observation of mobility edges in one-dimensional incommensurate optical lattices
Zhihao Xu, Hongli Huangfu, Yunbo Zhang +1
We investigate the wave packet dynamics for a one-dimensional incommensurate optical lattice with a special on-site potential which exhibits the mobility edge in a compactly analyt…
Dynamical evolution of an effective two-level system with PT symmetry
Lei Du, Zhihao Xu, Chuanhao Yin +1
We investigate the dynamics of parity- and time-reversal (PT ) symmetric two-energy-level atoms in the presence of two optical and a radio-frequency (rf) fields. The strength and r…
Topological Phase Transition and Charge Pumping in a One-Dimensional Periodically Driven Optical Lattice
Zhihao Xu, Yunbo Zhang, Shu Chen
Experimental realizations of topological quantum systems and detections of topological invariants in ultracold atomic systems have been a greatly attractive topic. In this work, we…
Evidence for correlated states in a cluster of bosons with Rashba spin-orbit coupling
Zhihao Xu, Zhenhua Yu, Shizhong Zhang
We study the ground state properties of spin-half bosons subjected to the Rashba spin-orbit coupling in two dimensions. Due to the enhancement of the low energy density of states,…
Topological Superfluids and BEC-BCS Crossover in Attractive Haldane-Hubbard Model
Yi-Cai Zhang, Zhihao Xu, Shizhong Zhang
Motivated by the recent realization of the Haldane model in shaking optical lattice, we investigate the effects of attractive interaction and BEC-BCS crossover in this model at and…
Mott-Superfluid Transition for Spin-Orbit Coupled Bosons in One-Dimensional Optical Lattices
Zhihao Xu, William Cole, Shizhong Zhang
We study the effects of spin-orbit coupling on the Mott-superfluid transition of bosons in a one-dimensional optical lattice. We determine the strong coupling magnetic phase diagra…
Topological insulator states in quasi-one-dimensional sawtooth chain
Zhihao Xu, Linhu Li
We report the discovery of flatten Bloch bands with nontrivial topological numbers in a quasi-one-dimensional sawtooth chain. We present the nearly flat-band with a obvious gap and…
Topological nature of magnetization plateaus in periodically modulated quantum spin chains
Haiping Hu, Chen Cheng, Zhihao Xu +2
We unveil nontrivial topological properties of zero-temperature magnetization plateau states in periodically modulated quantum spin chains under a uniform magnetic field. As positi…
Topological phases of generalized Su-Schrieffer-Heeger models
Linhu Li, Zhihao Xu, Shu Chen
We study the extended Su-Schrieffer-Heeger model with both the nearest-neighbor and next-nearest-neighbor hopping strengths being cyclically modulated and find the family of the mo…
Topological Mott insulators of ultracold atomic mixtures induced by interactions in one-dimensional optical superlattices
Zhihao Xu, Shu Chen
We present exactly solvable examples that topological Mott insulators can emerge from topologically trivial states due to strong interactions between atoms for atomic mixtures trap…
Fractional topological states of dipolar fermions in one-dimensional optical superlattices
Zhihao Xu, Linhu Li, Shu Chen
We study the properties of dipolar fermions trapped in one-dimensional bichromatic optical lattices and show the existence of fractional topological states in the presence of stron…
Wigner crystal versus Fermionization for one-dimensional Hubbard models with and without long-range interactions
Zhihao Xu, Linhu Li, Gao Xianlong +1
The ground state properties of Hubbard model with or without long-range interactions in the regime with strongly repulsive on-site interaction are investigated by means of the exac…
Wigner crystal induced by dipole-dipole interaction in one-dimensional optical lattices
Zhihao Xu, Shu Chen
We demonstrate that the static structure factor, momentum distribution and density distribution provide clear signatures of the emergence of Wigner crystal for the fermionic dipola…