Contradiction of quantum mechanics with local hidden variables for quadrature phase measurements on pair-coherent states and squeezed macroscopic superpositions of coherent states

Gilchrist, A., Deuar, P. and Reid, M. D. (1999) Contradiction of quantum mechanics with local hidden variables for quadrature phase measurements on pair-coherent states and squeezed macroscopic superpositions of coherent states. Physical Review A, 60 6: 4259-4271. doi:10.1103/PhysRevA.60.4259

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Author Gilchrist, A.
Deuar, P.
Reid, M. D.
Title Contradiction of quantum mechanics with local hidden variables for quadrature phase measurements on pair-coherent states and squeezed macroscopic superpositions of coherent states
Journal name Physical Review A   Check publisher's open access policy
ISSN 1050-2947
1094-1622
Publication date 1999
Sub-type Article (original research)
DOI 10.1103/PhysRevA.60.4259
Open Access Status File (Publisher version)
Volume 60
Issue 6
Start page 4259
End page 4271
Total pages 13
Place of publication College Park, MD, United States
Publisher American Physical Society
Collection year 1999
Language eng
Abstract We demonstrate a contradiction of quantum mechanics with local hidden variable theories for continuous quadrature phase amplitude (''position'' and ''momentum'') measurements. A contradiction is shown possible for two quantum states: a pair-coherent state, and a superpositions of two coherent states, where the superposition state has been squeezed by the action of a two-mode squeezing operator. In one case a contradiction is still possible for states of increasing photon number, though the effect becomes smaller and more difficult to observe. The high efficiency of the homodyne method of measurement of quadrature phase amplitudes may open a way for a loophole-free test of local hidden variable theories, and the effect of detection loss on the contradiction with local hidden variables is calculated. [S1050-2947(99)02208-8].
Keyword Optics
Physics, Atomic, Molecular & Chemical
Podolsky-rosen Paradox
Nondegenerate Parametric Oscillation
Bell-inequality
Experimental Realization
Nonclassical Properties
Arbitrarily Large
Distinct States
Photon Pairs
Realism
Violation
Q-Index Code C1
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Physical Sciences Publications
 
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Created: Tue, 10 Jun 2008, 14:28:00 EST