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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Editor: Grover Swartzlander
  • Vol. 31, Iss. 9 — Sep. 1, 2014
  • pp: 2163–2174

Quasi-probability distributions and decoherence of Hermite-excited squeezed thermal states

Zhen Wang, Heng-mei Li, and Hong-chun Yuan  »View Author Affiliations

JOSA B, Vol. 31, Issue 9, pp. 2163-2174 (2014)

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We theoretically put forward the Hermite-excited squeezed thermal states (HESTS) by applying operator Hermite polynomials on squeezed thermal states. Starting from the normally ordered density operator of squeezed thermal states and operator Hermite polynomials, the normalization factor is obtained, which is related to the Legendre polynomials. Several phase-space distribution functions, i.e., the Q function, P function, Wigner function (WF), and R function, are analytically derived. And the non-Gaussianity and nonclassicality are mainly reflected by the negativity of non-Gaussian WF and the existence of nonclassical depth. In addition, by deriving the normally ordered density operator and WF of HESTS in the laser channel, the decoherence effect is studied and discussed. Finally, the quantity in measuring non-Gaussianity is calculated to further quantitatively measure the non-Gaussianity of the resulting states.

© 2014 Optical Society of America

OCIS Codes
(270.0270) Quantum optics : Quantum optics
(270.6570) Quantum optics : Squeezed states

ToC Category:
Quantum Optics

Original Manuscript: March 31, 2014
Revised Manuscript: July 24, 2014
Manuscript Accepted: July 28, 2014
Published: August 26, 2014

Zhen Wang, Heng-mei Li, and Hong-chun Yuan, "Quasi-probability distributions and decoherence of Hermite-excited squeezed thermal states," J. Opt. Soc. Am. B 31, 2163-2174 (2014)

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