Entanglement dynamics of two-qubit systems in different quantum noises

doi:10.1088/1674-1056/20/2/020304

Abstract The entanglement dynamics of two-qubit systems in different quantum noises are investigated by means of the operator-sum representation method. We find that, except for the amplitude damping and phase damping quantum noise, the sudden death of entanglement is always observed in different two-qubit systems with generalized amplitude damping and depolarizing quantum noise.

Keywords: entanglement dynamics quantum noise operator-sum representation

Received: 05 August 2010
Revised: 18 August 2010
Accepted manuscript online:

PACS:	03.65.Ud	(Entanglement and quantum nonlocality)
	42.50.Lc	(Quantum fluctuations, quantum noise, and quantum jumps)

Fund: Project supported by the Natural Science Foundation of Hunan Province of China (Grant No. 10JJ3088), the Key Research Foundation of the Education Bureau of Hunan Province of China (Grant No. 08A015), and the Funds of the Hunan Education Bureau of China (Grant Nos. 10C0616 and 08C344).

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Pan Chang-Ning(潘长宁), Li-Fei(李飞), Fang Jian-Shu(方见树), and Fang Mao-Fa(方卯发) Entanglement dynamics of two-qubit systems in different quantum noises 2011 Chin. Phys. B 20 020304

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