Measurement-Induced Nonlocality and Geometric Discord in the Spin-Boson Model  

作　　者：Guoyou Wang Zilong Fan Haosheng Zeng 

机构地区：[1]Key Laboratory of Low-Dimensional QuantumStructures and Quantum Control of Ministry of Education, Department of Physics, Hunan Normal University, Changsha, China

出　　处：《Journal of Quantum Information Science》2013年第1期34-41,共8页量子信息科学期刊（英文）

摘　　要：Dynamics of measurement-induced-nonlocality (MIN) and geometric measure of discord (GD) in the spin-boson model is studied. Analytical results show that for two large classes of initial states, MINs are equal but GDs are different. At the end of evolution, MIN and GD initially stored in the spin system transfer completely to reservoirs. The quantum beats for MIN and GD are also found which are the results of quantum interference between two local non-Markovian dynamics via quantum correlation.Dynamics of measurement-induced-nonlocality (MIN) and geometric measure of discord (GD) in the spin-boson model is studied. Analytical results show that for two large classes of initial states, MINs are equal but GDs are different. At the end of evolution, MIN and GD initially stored in the spin system transfer completely to reservoirs. The quantum beats for MIN and GD are also found which are the results of quantum interference between two local non-Markovian dynamics via quantum correlation.

关 键 词：Measurement-Induced NONLOCALITY GEOMETRIC DISCORD Quantum BEAT 

分 类 号：O41[理学—理论物理]