Measurement-induced disturbance in Heisenberg XY spin model with Dzialoshinskii-Moriya interaction under intrinsic decoherence

doi:10.1088/1674-1056/23/5/050310

Abstract Quantum correlations measured by measurement-induced disturbance (MID) in a two-qubit Heisenberg XY spin model with Dzialoshinskii-Moriya (DM) interaction under intrinsic decoherence are investigated. MID is studied under various circumstances and the influences of the external dependencies on the final quantum state which has stable MID are discussed. Two kinds of initial quantum states are considered as well as different conclusions. MID appears to decay periodically during the processing of intrinsic decoherence; both DM interaction and intrinsic decoherence have a negative impact on the correlations. The MID of the stable state depends on several factors, except the parameter of the intrinsic decoherence. Moreover, we find a special initial state that is able to maintain the maximum quantum correlations during the processing of intrinsic decoherence.

Keywords: intrinsic decoherence measurement-induced disturbance quantum correlations dzialoshinskii-Moriya interaction

Received: 17 September 2013
Revised: 29 October 2013
Accepted manuscript online:

PACS:	03.67.Mn	(Entanglement measures, witnesses, and other characterizations)
	03.65.Yz	(Decoherence; open systems; quantum statistical methods)
	03.65.Ud	(Entanglement and quantum nonlocality)

Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 11174024, 61227902, and 11174358), the Fundamental Research Funds for the Central Universities of Ministry of Education of China (Grant No. YWF-13-D2-JC-19), and the Beijing City Youth Talent Plan, China.

Corresponding Authors: Zhang Guo-Feng
E-mail: gf1978zhang@buaa.edu.cn

About author: 03.67.Mn; 03.65.Yz; 03.65.Ud

Cite this article:

Shen Cheng-Gao (沈诚诰), Zhang Guo-Feng (张国锋), Fan Kai-Ming (樊开明), Zhu Han-Jie (朱汉杰) Measurement-induced disturbance in Heisenberg XY spin model with Dzialoshinskii-Moriya interaction under intrinsic decoherence 2014 Chin. Phys. B 23 050310

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Measurement-induced disturbance in Heisenberg XY spin model with Dzialoshinskii-Moriya interaction under intrinsic decoherence

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