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Strategies for enhancing quantum entanglement by local photon subtraction

Abstract:

Subtracting photons from a two-mode squeezed state is a well-known method to increase entanglement. We analyze different strategies of local photon subtraction from a two-mode squeezed state in terms of entanglement gain and success probability. We develop a general framework that incorporates imperfections and losses in all stages of the process: before, during, and after subtraction. By combining all three effects into a single efficiency parameter, we provide analytical and numerical resul...

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Publication status:
Published

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Publisher copy:
10.1103/PhysRevA.87.022313

Authors


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Institution:
University of Oxford
Department:
Oxford, MPLS, Physics
Role:
Author
More by this author
Institution:
University of Oxford
Department:
Oxford, MPLS, Physics
Role:
Author
More by this author
Institution:
University of Oxford
Department:
Oxford, MPLS, Physics
Role:
Author
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Journal:
PHYSICAL REVIEW A
Volume:
87
Issue:
2
Publication date:
2013-02-13
DOI:
EISSN:
1094-1622
ISSN:
1050-2947
URN:
uuid:e3693b43-7a0d-48f9-86cc-cab2cf043f57
Source identifiers:
388306
Local pid:
pubs:388306
Language:
English

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