共 1 条
[1]
Ali M,Rau A R P,Alber G. Phys. Rev. A . 2010
Robustness of quantum discord to sudden death in nuclear magnetic resonance
被引：0
作者：
胥建卫
[1
]
陈起辉
[2
]
机构：
[1] Key Laboratory for Radiation Physics and Technology, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610065, China
[2] Physics Department, Sichuan University, Chengdu 610065, China
基金：
中央高校基本科研业务费专项资金资助;
关键词：
quantum discord;
nuclear magnetic resonance;
concurrence;
sudden death;
D O I：
暂无
中图分类号：
O413.1 [量子力学（波动力学、矩阵力学）];
O482.532 [];
学科分类号：
070205 ;
0805 ;
080502 ;
0809 ;
摘要：
We investigate the dynamics of the entanglement and quantum discord of two qubits in liquid state homonuclear nuclear magnetic resonance. Applying a phenomenological description for nuclear magnetic resonance under a relaxation process, and taking a group of typical parameters of nuclear magnetic resonance, we show that when a zero initial state experiences a relaxation process, its entanglement disappears completely after a sequence of so-called sudden deaths and revivals, while the quantum discord retains remarkable values after a sequence of oscillations. That is to say, the quantum discord is more robust than entanglement.
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页码：64 / 70
页数：7
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