Channel Coupling: Entanglement Preservation via Unentangled Correlations
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    Abstract:

    Give two quantum channels acting on di?erent systems, we provide a natural and powerful method for coupling them by virtue of correlations between local environments. As an application, we demonstrate, through very simple examples, that separable (unentangled) correlations are a useful resource for preserving entanglement, which otherwise would be completely destroyed by entanglement breaking channels if environmental correlations were absent. This reveals a mechanism for engineering environments in ˉghting decoherence.

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Lina Chang, Shunlong Luo. Channel Coupling: Entanglement Preservation via Unentangled Correlations. International Journal of Software and Informatics, 2014,8(3-4):255~264

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  • Received:
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  • Online: April 03,2015
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