Emergence of topological and strongly correlated ground states in trapped Rashba spin-orbit-coupled Bose gases

@article{Ramachandhran2013EmergenceOT,
  title={Emergence of topological and strongly correlated ground states in trapped Rashba spin-orbit-coupled Bose gases},
  author={B. Ramachandhran and Hui Hu and Han Pu},
  journal={Physical Review A},
  year={2013},
  volume={87},
  pages={033627}
}
We theoretically study an interacting few-body system of Rashba spin-orbit coupled two-component Bose gases confined in a harmonic trapping potential. We solve the interacting Hamiltonian at large Rashba coupling strengths using Exact Diagonalization scheme, and obtain the ground state phase diagram for a range of interatomic interactions and particle numbers. At small particle numbers, we observe that the bosons condense to an array of topological states with n+1/2 quantum angular momentum… 

Figures from this paper

Evidence for correlated states in a cluster of bosons with Rashba spin-orbit coupling

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, it is expected that

Degenerate quantum gases with spin–orbit coupling: a review

  • H. Zhai
  • Physics, Chemistry
    Reports on progress in physics. Physical Society
  • 2015
It is shown that investigating SO coupling in cold atom systems can enrich the understanding of basic phenomena such as superfluidity, provide a good platform for simulating condensed matter states such as topological superfluids and result in novel quantum systems such as SO coupled unitary Fermi gas and high spin quantum gases.

Spin-orbit-coupled bosons interacting in a two-dimensional harmonic trap

A system of bosons in a two-dimensional harmonic trap in the presence of Rashba-type spin-orbit coupling is investigated. An analytic treatment of the ground state of a single atom in the

Magnetic and nematic phases in a Weyl type spin–orbit-coupled spin-1 Bose gas

We present a variational study of the spin-1 Bose gases in a harmonic trap with three-dimensional spin–orbit (SO) coupling of Weyl type. For weak SO coupling, we treat the single-particle ground

Dynamical generation of dark solitons in spin-orbit- coupled Bose-Einstein condensates

We numerically investigate the ground state, the Raman-driving dynamics, and the nonlinear excitations of a realized spin-orbit-coupled Bose–Einstein condensate in a 1D harmonic trap. Depending on

Spin-orbit coupling and strong correlations in ultracold Bose gases

The ability to create artificial gauge fields for neutral atoms adds a powerful new dimension to the idea of using ultracold atomic gases as “quantum simulators” of models that arise in conventional

Dynamical phases in quenched spin-orbit-coupled degenerate Fermi gas.

This work investigates the quench dynamics of a spin-orbit-coupled two-dimensional Fermi gas in which the Zeeman field serves as the major quench parameter and identifies three post-quench dynamical phases according to the asymptotic behaviour of the order parameter.

Energy spectrum of a harmonically trapped two-atom system with spin–orbit coupling

Ultracold atomic gases provide a novel platform with which to study spin–orbit coupling, a mechanism that plays a central role in the nuclear shell model, atomic fine structure and two-dimensional

Spin–orbit-coupled Bose–Einstein-condensed atoms confined in annular potentials

A spin–orbit-coupled Bose–Einstein-condensed cloud of atoms confined in an annular trapping potential shows a variety of phases that we investigate in the present study. Starting with the

Electromagnetically induced transparency in a spin-orbit coupled Bose-Einstein condensate.

This paper investigates EIT in a SO-coupled BEC, where not only is the transparency existing, but the real and imaginary parts of the susceptibility have an additional red frequency shift, which is linearly proportional to the strength of the SO coupling.

References

SHOWING 1-10 OF 26 REFERENCES

Phys

  • Rev. A 73, 063623
  • 2006

Phys

  • Rev. B 79, 045409
  • 2009

Phys

  • Rev. A 85, 023606
  • 2012

Phys

  • Rev. Lett. 108, 010402
  • 2012

Phys

  • Rev. B 85, 125122
  • 2012

Rev

  • Mod. Phys. 82, 2785
  • 2010

Phys

  • Rev. A 75, 023620 (2007); B. Juliá-Dı́az, D. Dagnino, K. J. Gunter, T. Grass, N. Barberan, M. Lewenstein, and J. Dalibard, ibid. 84, 053605
  • 2011

Eur

  • J. Phys. 31, 591
  • 2010

Phys

  • Rev. A 79, 053639
  • 2009

New J

  • Phys. 13, 105001
  • 2011