Abstract
We investigate statistical properties of photon-subtracted squeezed vacuum (PSSV) in a thermal environment with average thermal photon number 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 for the single-PSSV.
© 2008 Optical Society of America
Full Article | PDF ArticleMore Like This
Li-yun Hu, Xue-xiang Xu, and Hong-yi Fan
J. Opt. Soc. Am. B 27(2) 286-299 (2010)
Xiang-guo Meng, Zhen Wang, Hong-yi Fan, and Ji-suo Wang
J. Opt. Soc. Am. B 29(11) 3141-3149 (2012)
Li-Yun Hu and Zhi-Ming Zhang
J. Opt. Soc. Am. B 29(4) 529-537 (2012)