Optimizing quantum correlation dynamics by weak measurement in dissipative environment

被引：0

作者：

杜少将 ^{[1
,2
]}

夏云杰 ^{[1
]}

段德洋 ^{[1
]}

张路 ^{[1
]}

高强 ^{[1
]}

机构：

[1] Shandong Provincial Key Laboratory of Laser Polarization and Information Technology, Department of Physics,Qufu Normal University

[2] Department of Physics and Information Engineering, Jining University

来源：

Chinese Physics B | 2015年 / 04期

基金：

中国国家自然科学基金;

关键词：

quantum entanglement; quantum correlation; entanglement sudden death; weak measurement;

D O I：

暂无

中图分类号：

O413.1 [量子力学（波动力学、矩阵力学）];

学科分类号：

070205 ; 0809 ;

摘要：

We investigate the protection of quantum correlations of two qubits in independent vacuum reservoirs by means of weak measurements. It is found that the weak measurement can reduce the amount of quantum correlation for one type of initial state at the beginning in a non-Markovian environment and meanwhile it can reduce the occurrence time of entanglement sudden death(ESD) in the process of time evolution. In a Markovian environment, the quantum entanglements of the two kinds of initial states decay rapidly and the weak measurement can further weaken the quantum entanglement,therefore in this case the entanglement cannot be optimized in the evolution process.

引用

页码：225 / 230

页数：6