Spin squeezing and Einstein-Podolsky-Rosen entanglement of two bimodal condensates in state-dependent potentials

Hadrien Kurkjian, Krzysztof Pawłowski, Alice Sinatra, Philipp Treutlein

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

We propose and analyze a scheme to entangle the collective spin states of two spatially separated bimodal Bose-Einstein condensates. Using a four-mode approximation for the atomic field, we show that elastic collisions in a state-dependent potential simultaneously create spin-squeezing in each condensate and entangle the collective spins of the two condensates. We investigate mostly analytically the nonlocal quantum correlations that arise in this system at short times and show that Einstein-Podolsky-Rosen (EPR) entanglement is generated between the condensates. At long times we point out macroscopic entangled states and explain their structure. The scheme can be implemented with condensates in state-dependent microwave potentials on an atom chip.

Original languageEnglish (US)
Article number043605
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume88
Issue number4
DOIs
StatePublished - Oct 7 2013
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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