Two distinguishable impurities in BEC: squeezing and entanglement of two Bose polarons Articles uri icon

authors

  • Charalambous, Christos
  • Garcia March, Miguel A.
  • LAMPO, ANIELLO
  • Mehboudi, Mohammad
  • LEWENSTEIN, MACIEJ

publication date

  • January 2019

issue

  • 010

volume

  • 6

International Standard Serial Number (ISSN)

  • 2542-4653

abstract

  • We study entanglement and squeezing of two uncoupled impurities immersed in a BoseEinstein condensate. We treat them as two quantum Brownian particles interacting with
    a bath composed of the Bogoliubov modes of the condensate. The Langevin-like quantum
    stochastic equations derived exhibit memory effects. We study two scenarios: (i) In
    the absence of an external potential, we observe sudden death of entanglement; (ii)
    In the presence of an external harmonic potential, entanglement survives even at the
    asymptotic time limit. Our study considers experimentally tunable parameters.