The dynamics of quantum correlation with two controlled qubits under classical dephasing environment

被引：7

作者：

Li, Jun-Qi ^{[1
]}

Cui, Xin-Lin ^{[1
]}

Liang, J. -Q. ^{[1
]}

机构：

[1] Shanxi Univ, Inst Theoret Phys, Taiyuan 030006, Shanxi, Peoples R China

来源：

ANNALS OF PHYSICS | 2015年 / 354卷

关键词：

Quantum correlation; Dynamics; Environment; GEOMETRIC-MEASURE; DISCORD; SYSTEMS; NOISE;

D O I：

10.1016/j.aop.2015.01.005

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We discuss the quantum correlation dynamics of two qubits controlled through the application of pi-pulses under classical dephasing non-Markovian environment. It is shown that the quantum discord (QD) and one-norm geometric quantum discord (one-norm GQD) between the two qubits, which are prepared initially in the three-parameter-X-type quantum states, depend strongly on non-Markovian properties and the time difference between adjacent pulses. The freezing time of discord and one-norm GQD can be lengthened for appropriate pulse separate time and pulse numbers. And the freezing time of one-norm GQD is longer slightly than QD for both Markovian and non-Markovian cases. What is more, we find that double sudden changes of one-norm GQD can appear only for some initial parameters when pi-pulses are applied. (C) 2015 Elsevier Inc. All rights reserved.

引用

页码：365 / 374

页数：10

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