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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry M. Van Driel
  • Vol. 25, Iss. 12 — Dec. 1, 2008
  • pp: 1955–1964

Statistical properties of photon-subtracted squeezed vacuum in thermal environment

Li-yun Hu and Hong-yi Fan  »View Author Affiliations


JOSA B, Vol. 25, Issue 12, pp. 1955-1964 (2008)
http://dx.doi.org/10.1364/JOSAB.25.001955


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Abstract

We investigate statistical properties of photon-subtracted squeezed vacuum (PSSV) in a thermal environment with average thermal photon number n ¯ and dissipative coefficient κ by deriving the analytical expressions of the density operator and the Wigner function (WF). The normalization of m-PSSV is proved to be the m-order Lagendre polynomials. Time evolution of the photocount distribution is also related to Lagendre polynomials. The tomogram of PSSV is calculated by using the intermediate coordinate-momentum representation. Especially, the nonclassicality is discussed by virtue of the negativity of WF. It is found that the WF is always negative for all squeezing parameters λ if κ t < 1 2 ln ( 2 n ¯ + 2 ) ( 2 n ¯ + 1 ) for the single-PSSV.

© 2008 Optical Society of America

OCIS Codes
(000.5490) General : Probability theory, stochastic processes, and statistics
(270.0270) Quantum optics : Quantum optics
(270.2500) Quantum optics : Fluctuations, relaxations, and noise

ToC Category:
Quantum Optics

History
Original Manuscript: June 19, 2008
Revised Manuscript: August 12, 2008
Manuscript Accepted: September 18, 2008
Published: November 13, 2008

Citation
Li-yun Hu and Hong-yi Fan, "Statistical properties of photon-subtracted squeezed vacuum in thermal environment," J. Opt. Soc. Am. B 25, 1955-1964 (2008)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-25-12-1955

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