Semiquantum key distribution with secure delegated quantum computation

Qin Li, Wai Hong Chan, Shengyu Zhang
2016 Scientific Reports  
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
more » ... sed 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.
doi:10.1038/srep19898 pmid:26813384 pmcid:PMC4728610 fatcat:g55rgbivf5ghtgowow6cuj3p2i