Coherent spin mixing via spin-orbit coupling in Bose gases Articles uri icon

authors

  • CABEDO BRU, JOSEP
  • CLARAMUNT CAROS, JOAN
  • CELI, ALESSIO
  • ZHANG, YONGPING
  • AHUFINGER, VERONICA
  • MOMPART, JORDI

publication date

  • December 2019

start page

  • 1

end page

  • 11

issue

  • 6

volume

  • 100

International Standard Serial Number (ISSN)

  • 2469-9926

Electronic International Standard Serial Number (EISSN)

  • 2469-9934

abstract

  • We study beyond-mean-field properties of interacting spin-1 Bose gases with synthetic Rashba-Dresselhaus spin-orbit coupling at low energies. We derive a many-body Hamiltonian following a tight-binding approximation in quasimomentum space, where the effective spin dependence of the collisions that emerge from spin-orbit coupling leads to dominant correlated tunneling processes that couple the different bound states. We discuss the properties of the spectrum of the derived Hamiltonian and its experimental signatures. In a certain region of the parameter space, the system becomes integrable, and its dynamics becomes analogous to that of a spin-1 condensate with spin-dependent collisions. Remarkably, we find that such dynamics can be observed in existing experimental setups through quench experiments that are robust against magnetic fluctuations.

subjects

  • Mathematics

keywords

  • bose gases; spin-orbit coupling; spinor bose-einstein condensates; synthetic gauge fields