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Title

Spin-orbit coupled weakly interacting bose-einstein condensates in harmonic traps

Author(s)

Hu, Hui;  Ramachandhran, B.;  Pu, Han;  Liu, Xia-Ji

Abstract

We investigate theoretically the phase diagram of a spin-orbit coupled Bose gas in two-dimensional harmonic traps. We show that at strong spin-orbit coupling the single-particle spectrum decomposes into different manifolds separated by ℏω⊥, where ω⊥ is the trapping frequency. For a weakly interacting gas, quantum states with Skyrmion lattice patterns emerge spontaneously and preserve either parity symmetry or combined parity-time-reversal symmetry. These phases can be readily observed in a spin-orbit coupled gas of 87Rb atoms in a highly oblate trap.

Publication type

Journal article

Research centre

Swinburne University of Technology. Faculty of Engineering and Industrial Sciences. Centre for Atom Optics and Ultrafast Spectroscopy

Source

Physical Review Letters, Vol. 108, no. 1 (Jan 2012), article no. 010402

Publication year

2012

FOR Code(s)

02 Physical Sciences

Keyword(s)

Bose-Einstein condensates;  Harmonic traps;  Spin-orbit coupling

Publisher

American Physical Society

ISSN

0031-9007

Publisher URL

http://dx.doi.org/10.1103/PhysRevLett.108.010402

Copyright

Copyright © 2012 American Physical Society. The published version is reproduced with the kind permission of the publisher.

Research Projects

Ultracold atomic Fermi gases in the strongly interacting regime: a new frontier of quantum many-body physics, Australian Research Council grant number DP0984522
Imbalanced superfluidity: the quantum mystery that defies solution, Australian Research Project grant number DP0984637

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