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International Journal of Theoretical Physics

, Volume 53, Issue 2, pp 519–523 | Cite as

Conditions for the Freezing Phenomena of Geometric Measure of Quantum Discord for Arbitrary Two-Qubit X-states under Non-dissipative Dephasing Noises

  • Wei Song
  • Zhuo-Liang Cao
Article

Abstract

We study the dynamics of geometric measure of quantum discord (GMQD) under the influences of two local phase damping noises. Consider the two qubits initially in arbitrary X-states, we find the necessary and sufficient conditions for which GMQD is unaffected for a finite period. It is further shown that such results also hold for the non-Markovian dephasing process.

Keywords

Geometric Measure of Quantum Discord Phase damping noises Freezing Phenomena 

Notes

Acknowledgements

This work was supported by National Natural Science Foundation of China under Grant No. 10905024, No. 11374085, No. 11204061, No. 61073048, the Key Project of Chinese Ministry of Education under Grant No. 211080, and the Key Program of the Education Department of Anhui Province under Grant No. KJ2011A243, No. KJ2012A244.

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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  1. 1.School of Electronic and Information EngineeringHefei Normal UniversityHefeiChina

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