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Quantum Conference Key Agreement: A Review

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arxiv 2003.10186 v2 pith:DMMNW2QE submitted 2020-03-23 quant-ph

Gláucia Murta , Federico Grasselli , Hermann Kampermann , Dagmar Bru{ss} This is my paper · ORCID
classification quant-ph
keywords quantummultipartiteprotocolsagreementconferencedistributionreviewtask
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Conference key agreement (CKA), or multipartite key distribution, is a cryptographic task where more than two parties wish to establish a common secret key. A composition of bipartite quantum key distribution protocols can accomplish this task. However, the existence of multipartite quantum correlations allows for new and potentially more efficient protocols, to be applied in future quantum networks. Here, we review the existing quantum CKA protocols based on multipartite entanglement, both in the device-dependent and the device-independent scenario.

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  1. A resource- and computationally-efficient protocol for multipartite entanglement distribution in Bell-pair networks

    quant-ph 2024-12 conditional novelty 6.0 of 10

    A greedy star-merging protocol distributes GHZ states over arbitrary Bell-pair networks with O(N) gates, N-1 Bell pairs in the complete case, and a polynomial-time alternative to Steiner-tree-based methods.

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