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

by C. Charalambous, M.A. Garcia-March, A. Lampo, M. Mehboudi , M. Lewenstein

Submission summary

As Contributors:	Christos Charalambous
Arxiv Link:	https://arxiv.org/abs/1805.00709
Date accepted:	2019-01-02
Date submitted:	2018-11-05
Submitted by:	Charalambous, Christos
Submitted to:	SciPost Physics
Domain(s):	Theoretical
Subject area:	Condensed Matter Physics - Theory

Abstract

We study entanglement and squeezing of two uncoupled impurities immersed in a Bose-Einstein 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.

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