双Jaynes-Cummings耦合模型中几何量子失协的研究

J4 ›› 2016, Vol. 33 ›› Issue (6): 737-742.

双Jaynes-Cummings耦合模型中几何量子失协的研究

帕提古丽?马木提，艾合买提?阿不力孜? ，麦麦提依明?吐孙，帕肉克?帕尔哈提，买买提?阿不力孜

新疆师范大学物理与电子工程学院，新疆乌鲁木齐 830054

收稿日期:2016-05-16 修回日期:2016-09-01 出版日期:2016-11-28 发布日期:2016-11-28
通讯作者: 艾合买提?阿不力孜（1974-），维吾尔族，新疆轮台人，博士，教授，硕士生导师。 E-mail:aahmad@126.com
作者简介:帕提古丽?马木提（1990-），女，维吾尔族，新疆疏勒人，研究生，主要从事量子信息与量子计算的研究。E-mail:363326379@qq.com。
基金资助:
Special Support Plan for Candidates of National High Level Talents in Scientific and Technological Innovation(国家高层次人才特殊支持计划后备人选之科技创新领军人才项目），Tianshan Outstanding Talent of Xinjiang Uyghur Autonomous Region, The Second Level Traiting Candidates(自治区天山英才工程第二层次培养人选项目)

Geometric quantum discord in double Jaynes–Cummings model

Patiguli Mamuti，Aihemaiti Abulizi? ， Maimaitiyiming Tusun，Parouke Paerhati，Maimaiti Abulizi

School of Physics and Electronic Engineering, Xinjiang Normal University, Urumqi 830054, China

Received:2016-05-16 Revised:2016-09-01 Published:2016-11-28 Online:2016-11-28

摘要/Abstract

摘要： 基于Dakic提出的几何量子失协度量方法，研究了双Jaynes- Cummings(J-C)模型的几何量子失协。分析了初始态纯度、纠缠度、腔与原子间的耦合常数及腔内光子数等对几何量子失协随时间演化特性的影响。结果表明：通过提高纯度、初始纠缠度的值可以增大几何量子失协；非零光子数导致几何量子失协震荡衰减；通过调整腔与原子间的耦合常数可以改变振荡频率。

关键词: 量子光学；Jaynes- Cummings模型；量子纠缠；几何量子失协

Abstract: Based on the geometric quantum discord measurement method proposed by Dakic, the geometric quantum discord of double Jaynes-Cummings(J-C)model is investigated. Influences of the initial state purity, entanglement degree, coupling constant between atom and cavity, intracavity photon number on the evolution characteristics of geometric quantum discord with time are analyzed. Results show that geometric quantum discord can be increased by increasing the purity and initial entanglement value. The non-zero photon number leads to the decay of geometric quantum discord shock. The oscillation frequency can be changed by adjusting the coupling constant between the atom and cavity.

Key words: quantum optics; Jaynes-Cummings model; quantum entanglement; geometric quantum discord

中图分类号:

O431.2

帕提古丽?马木提，艾合买提?阿不力孜? ，麦麦提依明?吐孙，帕肉克?帕尔哈提，买买提?阿不力孜. 双Jaynes-Cummings耦合模型中几何量子失协的研究[J]. J4, 2016, 33(6): 737-742.

Patiguli Mamuti，Aihemaiti Abulizi? ， Maimaitiyiming Tusun，Parouke Paerhati，Maimaiti Abulizi. Geometric quantum discord in double Jaynes–Cummings model [J]. J4, 2016, 33(6): 737-742.

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