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Nonclassical properties of multiple-photon subtracted displaced squeezed thermal states

  • S. WangEmail author
  • L.Y. Hu
  • H.Y. Fan
Regular Article

Abstract

We investigate how the combination of photon subtraction and coherent displacement affects the nonclassical properties of multiple-photon subtracted displaced squeezed thermal state (PSDSTS). We find that the Mandel Q parameter, the quadrature squeezing and the negative volume of Wigner functions of the PSDSTS are all periodic functions of the compound phase φ − θ/2 involved in the squeezing parameter ξ = r e and the displacement parameter λ = |λ|e with a period π. Particularly, we find that some interesting effects arise as φ − θ/2 = π/2. However, they are all phase independent except the Wigner function when λ = 0. Finally, we investigate the non-Gaussianity of the PSDSTS according to the fidelity between the PSDSTS and the displaced squeezed thermal state (DSTS), and find that the non-Gaussianity induced by the photon-subtraction operation is essentially nonclassical.

Keywords

Quantum Optics 

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Copyright information

© EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  1. 1.Department of PhysicsShanghai Jiao Tong UniversityShanghaiP.R. China
  2. 2.College of Physics and Communication Electronics, Jiangxi Normal UniversityNanchangP.R. China

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