33 citations · 296 across the 25 of their papers we have counts for
11 papers · 1 filter
Dynamically observing the spectra of quantum droplets in optical lattice
Yuhang Nie, Jun-Hui Zheng, Tao Yang
Optical lattice plays an important role on stability and dynamics of quantum droplets. In this letter, we investigate the Bogoliubov excitation spectrum of quantum droplets in opti…
Gravity-induced accelerating expansion of excited-state Bose-Einstein condensate
Lijia Jiang, Jun-Hui Zheng
The Bose-Einstein condensate (BEC) of excited states, provides a different platform to explore the interplay between gravity and quantum physics. In this Letter, we study the respo…
Z2 characterization for three-dimensional multiband Hubbard models
Bernhard Irsigler, Jun-Hui Zheng, Fabian Grusdt +1
We introduce three numerical methods for characterizing the topological phases of three-dimensional multiband Hubbard models based on twisted boundary conditions, Wilson loops, as…
Microscopic characteristics and tomography scheme of the local Chern marker
Bernhard Irsigler, Jun-Hui Zheng, Walter Hofstetter
The concept of the local Chern marker has gained a lot of attention especially in the field of ultracold quantum gases in optical lattices and artificial gauge fields. We investiga…
Measuring the topological phase transition via the single-particle density matrix
Jun-Hui Zheng, Bernhard Irsigler, Lijia Jiang +2
We discuss the topological phase transition of the spin- fermionic Haldane model with repulsive on-site interaction. We show that the Berry curvature of the topologica…
Spin-imbalance-induced transverse magnetization in the Hofstadter-Hubbard model
Bernhard Irsigler, Jun-Hui Zheng, Mohsen Hafez-Torbati +1
The fermionic, time-reversal invariant Hofstadter-Hubbard model with a population difference between the two spin states is investigated. In the strongly interacting regime, where…
Interacting Hofstadter Interface
Bernhard Irsigler, Jun-Hui Zheng, Walter Hofstetter
Two-dimensional topological insulators possess conducting edge states at their boundary while being insulating in the bulk. The detection of edge states remains an open question in…
Spin-orbit-coupling-induced magnetic heterostructure in the bilayer Bose-Hubbard system
Bo Xiong, Jun-hui Zheng, Yu-Ju Lin +1
We investigate magnetic phase in the bilayer system of ultra-cold bosons in an optical lattice, which is involved with Raman-induced spin-orbit (SO) coupling and laser-assisted int…
Superfluidity enhanced by spin-flip tunnelling in the presence of a magnetic field
Jun-Hui Zheng, Daw-Wei Wang, Gediminas Juzeliunas
It is well-known that when the magnetic field is stronger than a critical value, the spin imbalance can break the Cooper pairs of electrons and hence hinder the superconductivity i…
Topological Condensate in an Interaction Induced Gauge Potential
Jun-hui Zheng, Bo Xiong, G. Juzeliunas +1
We systematically investigate the ground state and elementary excitations of a Bose-Einstein Condensate with a synthetic vector potential, which is induced by the many-body effects…
Nonadiabatic multichannel dynamics of a spin-orbit coupled condensate
Bo Xiong, Jun-hui Zheng, Daw-wei Wang
We investigate the nonadiabatic dynamics of a driven spin-orbit-coupled Bose-Einstein condensate in both weak and strong driven force. It is shown that the standard Landau-Zener (L…