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  Spin-momentum entanglement in a Bose–Einstein condensate

Kale, S. K., Ding, Y., Chen, Y. P., Friedrich, B., & Kais, S. (2020). Spin-momentum entanglement in a Bose–Einstein condensate. Physical Chemistry Chemical Physics, 22(44), 25669-25674. doi:10.1039/D0CP03945D.

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PCCP_July_24_Spin_momentum_entanglement_in_BEC.pdf (Any fulltext), 2MB
 
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Kale, Suresh Kale1, Author
Ding, Yijue1, Author
Chen, Yong P.2, 3, Author
Friedrich, Bretislav4, Author              
Kais, Sabre1, 2, 3, Author
Affiliations:
1Department of Chemistry, Purdue University, USA, ou_persistent22              
2Purdue Quantum Science and Engineering Institute, Purdue University, West Lafayette, USA, ou_persistent22              
3Department of Physics and Astronomy, Purdue University, West Lafayette, USA , ou_persistent22              
4Molecular Physics, Fritz Haber Institute, Max Planck Society, ou_634545              

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 Abstract: Entanglement is at the core of quantum information processing and may prove essential for quantum speed-up. Inspired by both theoretical and experimental studies of spin-momentum coupling in systems of ultra-cold atoms, we investigate the entanglement between the spin and momentum degrees of freedom of an optically trapped BEC of 87Rb atoms. We consider entanglement that arises due to the coupling of these degrees of freedom induced by Raman and radio-frequency fields and examine its dependence on the coupling parameters by evaluating von Neumann entropy as well as concurrence as measures of the entanglement attained. Our calculations reveal that under proper experimental conditions significant spin-momentum entanglement can be obtained, with von Neumann entropy of 80% of the maximum attainable value. Our analysis sheds some light on the prospects of using BECs for quantum information applications.

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Language(s): eng - English
 Dates: 2020-07-252020-10-242020-10-272020-11-28
 Publication Status: Published in print
 Pages: 6
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1039/D0CP03945D
 Degree: -

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Title: Physical Chemistry Chemical Physics
  Abbreviation : Phys. Chem. Chem. Phys.
Source Genre: Journal
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Publ. Info: Cambridge, England : Royal Society of Chemistry
Pages: 6 Volume / Issue: 22 (44) Sequence Number: - Start / End Page: 25669 - 25674 Identifier: ISSN: 1463-9076
CoNE: https://pure.mpg.de/cone/journals/resource/954925272413_1