高Q值微腔中二能级原子演化的操纵和量子反演  

Manipulation of Quantum Evolution and Reverse of Two-level Atoms in a High-Q Micro-cavity

作　　者：胡峰[1] 葛国勤[2] 

机构地区：[1]广东工业大学实验教学部,广东广州510006 [2]华中科技大学物理系,湖北武汉430074

出　　处：《广东工业大学学报》2007年第4期17-21,共5页Journal of Guangdong University of Technology

摘　　要：通过求解系统演化的主方程,研究了在高Q值腔中两能级原子的量子演化及其操控,特别是数值计算了在不同的场情况下原子在导入π脉冲后的演化.研究表明,在弱场情况下,作用于第一个原子的π脉冲不仅导致了第一个原子的量子演化的反演,还导致了后续第2个原子可以再现第1个原子的演化规律,从而为实现操控原子演化的规律和量子信息的传递提供了一种有效的方法.另外还提供了一种简单、方便可研判微腔中光子数的方法.This paper has studied atomic evolution and manipulation of two-level atoms in a high-Q micro-cavity, and has specially studied atomic evolution after introducing a π pulse for the first atom. It is shown that, the π pulse leads not only to the reverse of atomic evolution, but it also leads to the recurrence of the first atom evolution in the evolution of the second atom. Therefore, this shows an effective way to manipulate the atomic evolution, and quantum information transfer. We have also proposed a simple way to study and determine the photon number for the atommicrocavity system.

关 键 词：J-C模型 量子演化 量子反演 量子态操控 

分 类 号：O431.2[机械工程—光学工程]