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Non-Markovian Effect on the Classical and Quantum Correlations |
| XU Guo-Fu**, TONG Dian-Min
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Department of Physics, Shandong University, Jinan 250100
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XU Guo-Fu, TONG Dian-Min 2011 Chin. Phys. Lett. 28 060305 |
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Abstract We evaluate the dynamics of quantum and classical correlations in the presence of non-Markovian noises. By considering an entangled pair of spins in the noise environment described by Ornstein–Uhlenbeck processes, we show that the quantum discord of some states is completely unaffected by independent Ornstein–Uhlenbeck noises for long intervals of time, and that the inevitable onset of the sudden decrease of the quantum discord can be substantially delayed by the decrease of the noise bandwidth γ, where γ−1=τc defines the environment's finite correlation time of the noise.
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03.65.Ta
03.65.Yz
03.67.Mn
05.70.Fh
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Received: 10 March 2011
Published: 29 May 2011
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| PACS: |
03.65.Ta
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(Foundations of quantum mechanics; measurement theory)
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03.65.Yz
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(Decoherence; open systems; quantum statistical methods)
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03.67.Mn
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(Entanglement measures, witnesses, and other characterizations)
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05.70.Fh
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(Phase transitions: general studies)
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