Semiquantum key distribution with secure delegated quantum computation

Abstract

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.

7 pages, 2 figures

References in corpus (5)

• Quantum Key Distribution with Classical Bob
• Gigahertz decoy quantum key distribution with 1 Mbit/s secure key rate
• Verifiable measurement-only blind quantum computing with stabilizer testing
• Mediated Semi-Quantum Key Distribution
• Delegating Private Quantum Computations

Cited by in corpus (5)

• Semi-quantum communication: Protocols for key agreement, controlled secure direct communication and dialogue
• Circular semi-quantum secret sharing using single particles
• Keyless Semi-Quantum Point-to-point Communication Protocol with Low Resource Requirements
• Lightweight Mediated Semi-Quantum Key Distribution Protocol with a Dishonest Third Party based on Bell States
• Security of a single-state semi-quantum key distribution protocol