551 citations · 723 across the 9 of their papers we have counts for
9 papers
Construction of Maximally Localized Wannier Functions
Junbo Zhu, Zhu Chen, Biao Wu
We present a general method of constructing maximally localized Wannier functions. It consists of three steps: (1) picking a localized trial wave function, (2) performing a full ba…
Construction of Wannier Functions in Disordered Systems
Junbo Zhu, Zhu Chen, Biao Wu
We propose a general method of constructing Wannier functions in disordered systems directly out of energy eigenstates. This method consists of two successive operations: (i) a pha…
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…
Stability of -orbital Bose-Einstein condensates in optical checkerboard and square lattices
Yong Xu, Zhu Chen, Hongwei Xiong +2
We investigate -orbital Bose-Einstein condensates in both the square and checkerboard lattice by numerically solving the Gross-Pitaevskii equation. The periodic potential for th…
Superfluidity of Bosons in Kagome Lattices with Frustration
Yi-Zhuang You, Zhu Chen, Xiao-Qi Sun +1
In this letter we consider spinless bosons in a Kagome lattice with nearest-neighbor hopping and on-site interaction, and the sign of hopping is inverted by insetting a π flux in e…
Interaction Induced Hall Response in a Spin-Orbit Coupled Bose-Einstein Condensate
Zhu Chen, Hui Zhai
In this letter we consider the dynamic behaviors of spin-orbit coupled Bose condensates realized in recent experiments. We show that there exists an interaction induced ac Hall res…
Collective Dipole Oscillation of a Spin-Orbit Coupled Bose-Einstein Condensate
Jin-Yi Zhang, Si-Cong Ji, Zhu Chen +9
We present an experimental study of the collective dipole oscillation of a spin-orbit coupled Bose-Einstein condensate in a harmonic trap. Dynamics of the center-of-mass dipole osc…
Bose-Einstein Condensate in a Honeycomb Optical Lattice: Fingerprint of Superfluidity at the Dirac Point
Zhu Chen, Biao Wu
Mean-field Bloch bands of a Bose-Einstein condensate in a honeycomb optical lattice are computed. We find that the topological structure of the Bloch bands at the Dirac point is ch…