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Witnessing entanglement in phase space using inefficient detectors

Abstract:

We propose a scheme for witnessing entanglement in phase space by significantly inefficient detectors. The implementation of this scheme does not require any additional process for correcting errors, in contrast to previous proposals. Moreover, it allows us to detect entanglement without full a priori knowledge of the detection efficiency. It is shown that entanglement in single-photon entangled and two-mode squeezed states can be witnessed with detection efficiency as low as 40%. Our approac...

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Publisher copy:
10.1103/PhysRevA.81.012302

Authors


Journal:
Physical Review A - Atomic, Molecular, and Optical Physics
Volume:
81
Issue:
1
Publication date:
2010-01-05
DOI:
EISSN:
1094-1622
ISSN:
1050-2947
URN:
uuid:bbe5877a-0045-479b-b1ac-4d2b42b30181
Source identifiers:
134406
Local pid:
pubs:134406
Language:
English

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