Necessary and sufficient conditions for the entanglement sudden death under amplitude damping and phase damping

Jie-Hui Huang and Shi-Yao Zhu
Phys. Rev. A 76, 062322 – Published 26 December 2007
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  • INTRODUCTION
  • TIME EVOLUTION OF A TWO-QUBIT STATE…
  • ENTANGLEMENT VERIFICATION VIA PRINCIPAL…
  • NECESSARY AND SUFFICIENT CONDITIONS FOR…
  • CONCLUSIONS
  • ACKNOWLEDGEMENTS
    • References

    Abstract

    By using principal minor method, which is developed from the Peres-Horodecki criterion for the separability of a quantum state, we derive the necessary and sufficient conditions for the entanglement sudden death of a two-qubit state under amplitude damping and phase damping.

    • Received 6 August 2007

    DOI:https://doi.org/10.1103/PhysRevA.76.062322

    ©2007 American Physical Society

    Authors & Affiliations

    Jie-Hui Huang1 and Shi-Yao Zhu1,2

    • 1Department of Physics, Hong Kong Baptist University, Hong Kong, China
    • 2Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026, China

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    Issue

    Vol. 76, Iss. 6 — December 2007

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