Increasing distillable key rate from bound entangled states by using local filtration

Arvind; Mayank Mishra; Ritabrata Sengupta

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Increasing distillable key rate from bound entangled states by using local filtration

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arxiv 2006.07945 v4 pith:A4AVCVAZ submitted 2020-06-14 quant-ph

Mayank Mishra , Ritabrata Sengupta , Arvind This is my paper · ORCID

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keywords bounddistillableentangledlocalratestatesenhancementfiltering

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We show the enhancement of distillable key rate for quantum key distribution(QKD), by local filtering, for several bound entangled states. Through our work it becomes evident that the local filtration operations, while transforming one bound entangled state to another, have the potential to increase the utility of the new state for QKD. We demonstrate three examples of `one way distillable key rate' enhancement by local filtering and in this process, discover new bound entangled states which are key distillable.

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