Semiquantum key distribution with secure delegated quantum computation

Semiquantum key distribution allows a quantum party to share a random key with a “classical” party who only can prepare and measure qubits in the computational basis or reorder some qubits when he has access to a quantum channel. In this work, we present a protocol where a secret key can be establis...

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Bibliographic Details
Published in:Scientific reports 2016-01, Vol.6 (1), p.19898-19898, Article 19898
Main Authors: Li, Qin, Chan, Wai Hong, Zhang, Shengyu
Format: Article
Language:English
Subjects:
639/705/117
639/766/483/481
Computer applications
Humanities and Social Sciences
multidisciplinary
Protocol
Science
Servers
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Summary:Semiquantum key distribution allows a quantum party to share a random key with a “classical” party who only can prepare and measure qubits in the computational basis or reorder some qubits when he has access to a quantum channel. In this work, we present a protocol where a secret key can be established between a quantum user and an almost classical user who only needs the quantum ability to access quantum channels, by securely delegating quantum computation to a quantum server. We show the proposed protocol is robust even when the delegated quantum server is a powerful adversary and is experimentally feasible with current technology. As one party of our protocol is the most quantum-resource efficient, it can be more practical and significantly widen the applicability scope of quantum key distribution.
ISSN:2045-2322
2045-2322
DOI:10.1038/srep19898