Reduction of entropic uncertainty in entangled qubits system by local JJ-symmetric operation

doi:10.1088/1674-1056/24/9/090304

中国物理B ›› 2015, Vol. 24 ›› Issue (9): 90304-090304.doi: 10.1088/1674-1056/24/9/090304

Reduction of entropic uncertainty in entangled qubits system by local JJ-symmetric operation

张诗阳, 方卯发, 张延亮, 郭有能, 赵艳君, 唐武伟

Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, and Department of Physics, Hunan Normal University, Changsha 410081, China

收稿日期:2015-01-30 修回日期:2015-03-10 出版日期:2015-09-05 发布日期:2015-09-05
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11374096 and 11074072).

Reduction of entropic uncertainty in entangled qubits system by local JJ-symmetric operation

Zhang Shi-Yang (张诗阳), Fang Mao-Fa (方卯发), Zhang Yan-Liang (张延亮), Guo You-Neng (郭有能), Zhao Yan-Jun (赵艳君), Tang Wu-Wei (唐武伟)

Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, and Department of Physics, Hunan Normal University, Changsha 410081, China

Received:2015-01-30 Revised:2015-03-10 Online:2015-09-05 Published:2015-09-05
Contact: Fang Mao-Fa E-mail:mffang@hunnu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11374096 and 11074072).

摘要/Abstract

摘要：

We investigate the quantum-memory-assisted entropic uncertainty for an entangled two-qubit system in a local quantum noise channel with JJ-symmetric operation performing on one of the two particles. Our results show that the quantum-memory-assisted entropic uncertainty in the qubits system can be reduced effectively by the local JJ-symmetric operation. Physical explanations for the behavior of the quantum-memory-assisted entropic uncertainty are given based on the property of entanglement of the qubits system and the non-locality induced by the re-normalization procedure for the non-Hermitian JJ-symmetric operation.

关键词: entropic uncertainty relation, JJ-symmetric operation, quantum entanglement

Abstract:

Key words: entropic uncertainty relation, JJ-symmetric operation, quantum entanglement

中图分类号: (Decoherence; open systems; quantum statistical methods)

03.65.Yz

03.67.-a (Quantum information) 03.67.Lx (Quantum computation architectures and implementations)

张诗阳, 方卯发, 张延亮, 郭有能, 赵艳君, 唐武伟. Reduction of entropic uncertainty in entangled qubits system by local JJ-symmetric operation[J]. 中国物理B, 2015, 24(9): 90304-090304.

Zhang Shi-Yang (张诗阳), Fang Mao-Fa (方卯发), Zhang Yan-Liang (张延亮), Guo You-Neng (郭有能), Zhao Yan-Jun (赵艳君), Tang Wu-Wei (唐武伟). Reduction of entropic uncertainty in entangled qubits system by local JJ-symmetric operation[J]. Chin. Phys. B, 2015, 24(9): 90304-090304.

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Reduction of entropic uncertainty in entangled qubits system by local JJ-symmetric operation

Reduction of entropic uncertainty in entangled qubits system by local JJ-symmetric operation

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