Sensitivity to thermal noise of atomic Einstein-Podolsky-Rosen entanglement

Lewis-Swan, R. J. and Kheruntsyan, K. V. (2013) Sensitivity to thermal noise of atomic Einstein-Podolsky-Rosen entanglement. Physical Review A, 87 6: . doi:10.1103/PhysRevA.87.063635

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Author Lewis-Swan, R. J.
Kheruntsyan, K. V.
Title Sensitivity to thermal noise of atomic Einstein-Podolsky-Rosen entanglement
Journal name Physical Review A   Check publisher's open access policy
ISSN 1050-2947
1094-1622
Publication date 2013-06-25
Year available 2013
Sub-type Article (original research)
DOI 10.1103/PhysRevA.87.063635
Open Access Status File (Publisher version)
Volume 87
Issue 6
Total pages 6
Place of publication College Park, MD, United States
Publisher American Physical Society
Collection year 2014
Language eng
Formatted abstract
We examine the prospect of demonstrating Einstein-Podolsky-Rosen (EPR) entanglement for massive particles using spin-changing collisions in a spinor Bose-Einstein condensate. Such a demonstration has recently been attempted by Gross et al. [ Nature (London) 480 219 (2011)] using a condensate of 87Rb atoms trapped in an optical lattice potential. For the condensate initially prepared in the (F,mF)=(2,0) hyperfine state, with no population in the mF=±1 states, we predict a significant suppression of the product of inferred quadrature variances below the Heisenberg uncertainty limit, implying strong EPR entanglement. However, such EPR entanglement is lost when the collisions are initiated in the presence of a small (currently undetectable) thermal population th in the mF=±1 states. For condensates containing 150–200 atoms, we predict an upper bound of th≃1 that can be tolerated in this experiment before EPR entanglement is lost.
Keyword States
Condensate
Dynamics
Paradox
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Article # 063635

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
Official 2014 Collection
 
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Citation counts: TR Web of Science Citation Count  Cited 6 times in Thomson Reuters Web of Science Article | Citations
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