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International Journal of Theoretical Physics

, Volume 53, Issue 1, pp 102–110 | Cite as

Entanglement Teleportation Via Two-Qubit Channel Under the Non-Markovian Environment

  • Le Song
  • Guo-Hui Yang
Article
  • 97 Downloads

Abstract

Entanglement teleportation via a two-qubit quantum channel under the non-Markovian environment is investigated in detail. We mainly concentrate on the effects about the channel initial states and decoherence environment on the entanglement of the output state C out and the average fidelity F a. It is shown that for different channel initial states with increasing noise environment parameters the teleportated entanglement is initially decreased from the maximum value to a minimum value and then undergoes a increasing tendency finally to be one constant nonzero value. The average fidelity is strongly dependent on the channel initial states and the Non-Markovian environment, tuning these parameters can make the average fidelity larger than the maximum value of classical communication 2/3. Moreover, there is a threshold time t c , when t<t c the average fidelity is always superior to 2/3, tuning the environment parameters and channel initial states not only can make F a superior to 2/3 but also can broaden the region where F a is larger than 2/3. We also obtain the analytic solution values of t c in the limit case of γ→∞ where the non-Markovian environment reduced to the Markovian one.

Keywords

Entanglement teleportation Average fidelity 

Notes

Acknowledgements

This project was supported by the Natural Science Foundation for Young Scientists of Shanxi Province, China (Grant No. 2012021003-3) and the Special Funds of the National Natural Science Foundation of China (Grant No. 11247247).

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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  1. 1.School of Physics and Information EngineeringShanxi Normal UniversityLinfenP.R. China

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