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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 |
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Abstract 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.
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Received: 30 January 2015
Revised: 10 March 2015
Accepted manuscript online:
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PACS:
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03.65.Yz
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(Decoherence; open systems; quantum statistical methods)
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03.67.-a
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(Quantum information)
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03.67.Lx
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(Quantum computation architectures and implementations)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 11374096 and 11074072). |
Corresponding Authors:
Fang Mao-Fa
E-mail: mffang@hunnu.edu.cn
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Cite this article:
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 2015 Chin. Phys. B 24 090304
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