原子与分子物理学报2008，Vol.25Issue(5)：1294-1300,7.
双模纠缠相干光场控制下双光子过程中有效二能级原子的信息熵压缩
Information entropy squeezing of an effective two-level atom controlled by two-mode entangled coherent fields
摘要
Abstract
From a quantum information point of view we investigate the entropy squeezing properties for an effective two-level atom interacting with the two-mode entangled coherent fields via the two-photon transition.We discuss the influences of the initial state of the field on the atomic information entropy squeezing and compare its results with those of atomic squeezing based on the Hesienbeg uncertainty relation.Our results show that the squeezed stable cycle,and squeezed direction of the information entropy squeezing can be controlled by choosing the average photon number and the direction angle of the field,respectively.Under a strong field,the entangled degree of the field has no effect on the information entropy squeezing.Quantum information entropy is a remarkable precision measure for the atomic squeezing.关键词
信息熵压缩/方差压缩/海森堡不准关系/信息熵测不准关系Key words
information entropy squeezing/variance squeezing/Hesienberg uncertainty relation/information entropy uncertainty relation分类
数理科学引用本文复制引用
刘小娟,周元俊..双模纠缠相干光场控制下双光子过程中有效二能级原子的信息熵压缩[J].原子与分子物理学报,2008,25(5):1294-1300,7.基金项目
国家自然科学基金(19874020) （19874020）
湖南省自然科学基金(05JJ30004) （05JJ30004）
