| Positive Aspects of Noise Effect on Quantum Correlations |
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| Xueyuan Hu,Wuming Liu. Positive Aspects of Noise Effect on Quantum Correlations. International Journal of Software and Informatics, 2014,8(3-4):225~240 |
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| Fund:This work is sponsored by the Fundamental Research Funds of Shandong University under Grants No.2014TB018, NSFC under Grant No. 11447161, the NKBRSFC under grants Nos. 2011CB921502,2012CB821305, NSFC under Grants Nos. 61227902, 61378017, SKLQOQOD under Grants No.KF201403, SPRPCAS under Grants No. XDB01020300. |
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| Abstract:Quantum correlations, including entanglement, quantum discord, teleportation fidelity, etc., are resources for quantum information processing. Unavoidable quantum noise usually causes decreasing of quantum correlations, and thus affect the effciency of quantum computation and communication. However, evidences show that proper quantum noise can
increase quantum correlations under special conditions. This is because some quantum noise can rebuild the coherence of mixed quantum states. This article reviews the positive aspects of noise effect on quantum correlations, including collective noise, which is caused by several qubits interacting with a common reservoir, as well as individual noise, which is caused by each qubit locally coupled to its own reservoir. |
| keywords:quantum noise quantum correlation entanglement |
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