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On the validity of factorization law for the entanglement evolution of two qubits

Huo Ya-Jing Li Jun-Gang

On the validity of factorization law for the entanglement evolution of two qubits

Huo Ya-Jing, Li Jun-Gang
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Publishing process
  • Received Date:  09 April 2012
  • Accepted Date:  15 May 2012
  • Published Online:  05 November 2012

On the validity of factorization law for the entanglement evolution of two qubits

  • 1. School of Physics, Beijing Institute of Technology, Beijing 100081, China
Fund Project:  Project supported by the National Natural Science Foundation of China (Grant Nos. 11005008, 10974016), and the Fundamental Research Fund of Beijing Institute of Technology.

Abstract: The validity of factorization law for the entanglement evolution of two qubits coupled to two independent non-Markovian channels is investigated. It is found that for some initial states, such as the Bell state and the maximally entangled mixed state, the entanglement can be characterized by the factorized entanglement when the effects of the channels are weak. For the general initial states, the factorized entanglement provides us with a good approximation to characterize the entanglement dynamics when the entanglement is large.

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