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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

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Submission summary

As Contributors: Christos Charalambous
Arxiv Link: (pdf)
Date accepted: 2019-01-02
Date submitted: 2018-11-05 01:00
Submitted by: Charalambous, Christos
Submitted to: SciPost Physics
Academic field: Physics
  • Condensed Matter Physics - Theory
  • Quantum Physics
Approach: Theoretical


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.

Ontology / Topics

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Bose-Einstein condensates (BECs) Brownian motion Entanglement

Published as SciPost Phys. 6, 010 (2019)

Reports on this Submission

Anonymous Report 2 on 2018-12-18 (Invited Report)


The authors have addressed my comments in an entirely convincing way. I recommend publication of the manuscript without further delay.

  • validity: -
  • significance: -
  • originality: -
  • clarity: -
  • formatting: -
  • grammar: -

Anonymous Report 1 on 2018-12-8 (Invited Report)


In their replies to both referee reports, the authors have addressed all criticism. They have amended their manuscript accordingly. As I mentioned in my first report, I recommend publication of this manuscript in SciPost in its present form and without any further delay. I apologize for my late response to the reviewers reply.

  • validity: high
  • significance: good
  • originality: good
  • clarity: good
  • formatting: excellent
  • grammar: excellent

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