Semiquantum key distribution with secure delegated quantum computation

Qin LI, Wai Hong CHAN, Shengyu ZHANG

Research output: Contribution to journalArticlespeer-review

39 Citations (Scopus)


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. Copyright © 2016 Macmillan Publishers Limited.
Original languageEnglish
Article number19898
JournalScientific Reports
Publication statusPublished - Jan 2016


Li, Q., Chan, W. H., & Zhang, S. (2016, January). Semiquantum key distribution with secure delegated quantum computation. Scientific Reports, 6. Retrieved February 15, 2016, from


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