,Amplitude-squared squeezing of superposition of coherent states

• 作 者: Muhammad Ashfaq Ahmad Ren Min Ma Ai-Qun Liu Shu-Tian
• 机 构: Department of Physics,Harbin Institute of Technology,Harbin 150001,China“,”Department of Physics,COM
• 出 处: 中国物理B（英文版）
• 发表日期: 2008年5期
• 关键词: nonclassical states superposition of two coherent states amplitude-squared squee

This paper discusses the amplitude-squared squeezing for the superposition of two coherent states with their phase differences being separately π/2,3π/2,and π,as well as for the superposition state of two pseudoclassical states.According to the analysis,it is found that the superposition state of two coherent states with their phase differences π/2 and 3π/2,and the superposition state of two pseudoclassical states both do exhibit the amplitude-squared squeezing.Also,some specific states are found to exhibit even stronger squeezing effects when relative phase of the superposition is equal to the average photon number.Amplitude-squared squeezing is dependent on the difference in phase between two coherent states.