Related papers: Quantum cryptographic resource distillation and entanglement

Quantum cryptographic resource distillation and entanglement

URL: http://arxiv.org/abs/2110.13707v1
Date: Tue, 26 Oct 2021 13:53:28 GMT
Title: Quantum cryptographic resource distillation and entanglement
Authors: Minjin Choi, Soojoon Lee
Abstract summary: We look into multipartite quantum states on which quantum cryptographic protocols including quantum key distribution and quantum secret sharing can be perfectly performed. We define the cryptographic cryptographic resource distillable rate as the rate at which such multipartite state can be distilled from a given multipartite state.
Score: 3.649582705724549
License: http://creativecommons.org/licenses/by/4.0/
Abstract: We look into multipartite quantum states on which quantum cryptographic protocols including quantum key distribution and quantum secret sharing can be perfectly performed, and define the quantum cryptographic resource distillable rate as the asymptotic rate at which such multipartite state can be distilled from a given multipartite state. Investigating several relations between entanglement and the rate, we show that there exists a multipartite bound entangled state whose quantum cryptographic resource distillable rate is strictly positive, that is, there exists a multipartite entangled state which is not distillable, but can be useful for quantum cryptography such as quantum key distribution and quantum secret sharing.

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