Protecting entanglement by detuning: in Markovian environments vs in non-Markovian environments

doi:10.1088/1674-1056/19/9/090318

Abstract The models of two qubits separately trapped in two independent Markovian or non-Markovian environments have been investigated. The distinction of the two-qubit entanglement dynamics in different environments has also been discussed in detail. The results show that, in non-Markovian environments, the possible usage time of entanglement can be extended due to its memory effect. On the other hand, we note that, compared to Markovian environments, the two-qubit entanglement could be protected better in non-Markovian environments by modulating the detuning between qubits and cavities. Finally, an intuitive physical interpretation for these results is given.

Keywords: protecting entanglement Markovian environment non-Markovian environment

Received: 25 December 2009
Revised: 27 February 2010
Accepted manuscript online:

PACS:	0367
	4250

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Huang Li-Yuan(黄利元) and Fang Mao-Fa(方卯发) Protecting entanglement by detuning: in Markovian environments vs in non-Markovian environments 2010 Chin. Phys. B 19 090318

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[2]	Population dynamics of excited atoms in non-Markovian environments at zero and finite temperature Zou Hong-Mei (邹红梅), Fang Mao-Fa (方卯发). Chin. Phys. B, 2015, 24(8): 080304.
[3]	Rise of quantum correlations in non-Markovian environments in continuous-variable systems Liu Xin (刘辛), Wu Wei (吴薇). Chin. Phys. B, 2014, 23(7): 070303.
[4]	High entanglement generation and high fidelity quantum state transfer in a non-Markovian environment Li Yan-Ling(李艳玲) and Fang Mao-Fa(方卯发) . Chin. Phys. B, 2011, 20(10): 100312.

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Protecting entanglement by detuning: in Markovian environments vs in non-Markovian environments

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