Phase-sensitive nonclassical properties of photon-added displaced squeezed thermal states

作者：Wang, Shuai^*; Fan, Hong yi

来源：Journal of the Optical Society of America B-Optical Physics, 2012, 29(7): 1672-1679.

DOI：10.1364/JOSAB.29.001672

• Displacement parameters
• Mandel Q parameter
• Nonclassical properties
• Periodic function
• Photon additions
• Quadrature squeezing
• Squeezed thermal state
• Wigner functions

We investigate the nonclassical properties of multiple-photon-added displaced squeezed thermal states (PADSTSs). Particularly, we study the dependence of those nonclassical properties on the compound phase. phi - theta/2 involved in squeezing and displacement parameters. We find that the Mandel Q parameter, the quadrature squeezing, the negative volume of the Wigner function, and the fidelity between PADSTSs and displaced squeezed thermal states (DSTSs) are all periodic functions of phi - theta/2 with a period pi. Without considering the displacement parameter, these quantities are all phase independent. Finally, we investigate the non-Gaussianity of PADSTSs according to the fidelity between PADSTSs and DSTSs and find that non-Gaussianity and nonclassicality have similar behavior. Thus, the non-Gaussianity induced by the photon-addition operation is essentially nonclassical.

• 出版日期2012-7
• 单位上海交通大学