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On the nonlocal predictions of quantum opticsWe give a definition of locality in quantum optics based upon Bell's work, and show that locality has been violated in no experiment performed up to now. We argue that the interpretation of the Wigner function as a probability density gives a very attractive local realistic picture of quantum optics provided that this function is nonnegative. We conjecture that this is the case for all states which can be realized in the laboratory. In particular, we believe that the usual representation of 'single photon states' by a Fock state of the Hilbert space is not correct and that a more physical, although less simple mathematically, representation involves density matrices. We study in some detail the experiment showing anticorrelation after a beam splitter and prove that it naturally involves a positive Wigner function. Our (quantum) predictions for this experiment disagree with the ones reported in the literature.
Document ID
19950007554
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Marshall, Trevor W.
(Manchester Univ.)
Santos, Emilio
(Manchester Univ.)
Vidiella-Barranco, Antonio
(Manchester Univ.)
Date Acquired
September 6, 2013
Publication Date
May 1, 1994
Publication Information
Publication: NASA. Goddard Space Flight Center, Third International Workshop on Squeezed States and Uncertainty Relations
Subject Category
Optics
Accession Number
95N13967
Funding Number(s)
CONTRACT_GRANT: DGICYT-PB-92-0507
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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