Higher-order nonclassical effects generated by multiple-photon annihilation-then-creation and creation-then-annihilation coherent states  

作　　者：袁洪春 徐学翔 肖进 熊超 朱锡芳 

机构地区：[1]College of Electrical and Optoelectronic Engineering, Changzhou Institute of Technology [2]Changzhou Institute of Modern Optoelectronic Technology [3]College of Physics and Communication Electronics, Jiangxi Normal University

出　　处：《Chinese Physics B》2016年第5期186-191,共6页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant Nos.11447002 and 11447202);the Natural Science Foundation of Jiangxi Province of China(Grant No.20151BAB202013);the Research Foundation for Changzhou Institute of Modern Optoelectronic Technology of China(Grant No.CZGY15)

摘　　要：We explore two observable nonclassical properties of quantum states generated by repeatedly operating annihilationthen-creation（AC） and creation-then-annihilation（CA） on the coherent state, respectively, such as higher-order subPoissonian statistics and higher-order squeezing-enhanced effect. The corresponding analytical expressions are derived in detail depending on m. By numerically comparing those quantum properties, it is found that these states above have very different nonclassical properties and nonclassicality is exhibited more strongly after AC operation than after CA operation.We explore two observable nonclassical properties of quantum states generated by repeatedly operating annihilationthen-creation（AC） and creation-then-annihilation（CA） on the coherent state, respectively, such as higher-order subPoissonian statistics and higher-order squeezing-enhanced effect. The corresponding analytical expressions are derived in detail depending on m. By numerically comparing those quantum properties, it is found that these states above have very different nonclassical properties and nonclassicality is exhibited more strongly after AC operation than after CA operation.

关 键 词：non-Gaussian operation sub-Poissonian statistics higher-order squeezing 

分 类 号：O572.31[理学—粒子物理与原子核物理]