Dynamics of Entanglement of Qutrit-Qutrit States with Stochastic Dephasing |
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Authors: | MA Xiao-San REN Ming-Fan ZHAO Guang-Xing WANG An-Min |
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Institution: | 1.School of Electric Engineering and Information, Anhui University of Technology, Ma'anshan 243002, China;2.Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China |
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Abstract: | The effect of stochastic dephasing on the dynamics of entanglement of qutrit-qutrit states is investigated by using negativity and bound entanglement defined with realignment criterion. From the analysis, we find that the time evolution of quantum free entanglement and bound entanglement depends on the fluctuations of the stochastic variables and the parameters of the particular initial states of concern. Our results imply that some qutrits states display both distillability sudden death and entanglement sudden death, while some states do not display distillability sudden death but onlyentanglement sudden death. |
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Keywords: | bound entanglement free entanglement stochastic dephasing |
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