Quantum geometry and flat band Bose-Einstein condensation

A Julku, GM Bruun, P Törmä - Physical review letters, 2021 - APS
We study the properties of a weakly interacting Bose-Einstein condensate (BEC) in a flat
band lattice system by using the multiband Bogoliubov theory and discover fundamental …

Experimental determination of the finite-temperature phase diagram of a spin–orbit coupled Bose gas

SC Ji, JY Zhang, L Zhang, ZD Du, W Zheng, YJ Deng… - Nature physics, 2014 - nature.com
Spin–orbit (SO) coupling leads to numerous phenomena in electron systems. Artificial SO
coupling in ultracold neutral atoms provides the opportunity to study such phenomena in …

Anisotropic dynamics of a spin-orbit-coupled Bose-Einstein condensate

GI Martone, Y Li, LP Pitaevskii, S Stringari - Physical Review A—Atomic …, 2012 - APS
By calculating the density response function we identify the excitation spectrum of a Bose-
Einstein condensate with equal Rashba and Dresselhaus spin-orbit coupling. We find that …

Vortex solitons in two-dimensional spin-orbit coupled Bose-Einstein condensates: Effects of the Rashba-Dresselhaus coupling and Zeeman splitting

H Sakaguchi, EY Sherman, BA Malomed - Physical Review E, 2016 - APS
We present an analysis of two-dimensional (2D) matter-wave solitons, governed by the
pseudospinor system of Gross-Pitaevskii equations with self-and cross attraction, which …

Manipulating topological edge spins in a one-dimensional optical lattice

XJ Liu, ZX Liu, M Cheng - Physical review letters, 2013 - APS
We propose to observe and manipulate topological edge spins in a one-dimensional optical
lattice based on currently available experimental platforms. Coupling the atomic spin states …

Properties of Bose gases with the Raman-induced spin–orbit coupling

W Zheng, ZQ Yu, X Cui, H Zhai - Journal of Physics B: Atomic …, 2013 - iopscience.iop.org
In this paper we investigate the properties of Bose gases with Raman-induced spin–orbit
(SO) coupling. It is found that the SO coupling can greatly modify the single-particle density …

Interacting spin-orbit-coupled spin-1 Bose-Einstein condensates

K Sun, C Qu, Y Xu, Y Zhang, C Zhang - Physical Review A, 2016 - APS
The recent experimental realization of spin-orbit (SO) coupling for spin-1 ultracold atoms
opens an interesting avenue for exploring SO-coupling-related physics in large-spin …

Spin–orbital-angular-momentum coupling in Bose-Einstein condensates

K Sun, C Qu, C Zhang - Physical Review A, 2015 - APS
Spin-orbit coupling (SOC) plays a crucial role in many branches of physics. In this context,
the recent experimental realization of the coupling between spin and linear momentum of …

Spin-orbit-coupling-induced quantum droplet in ultracold Bose-Fermi mixtures

X Cui - Physical Review A, 2018 - APS
Quantum droplets have aroused much attention recently in view of their successful
observations in ultracold homonuclear atoms. In this paper, we demonstrate an alternative …

Composite fermion state of spin-orbit-coupled bosons

TA Sedrakyan, A Kamenev, LI Glazman - Physical Review A—Atomic …, 2013 - APS
We consider spinor Bose gas with the isotropic Rashba spin-orbit coupling in two
dimensions. We argue that at low density, its ground state is a composite fermion state with a …