Robustness of round-robin differential-phase-shift quantum-key-distribution protocol against source flaws

Abstract

Recently, a new type of quantum key distribution, called the round-robin differential phase-shift (RRDPS) protocol [Nature 509, 475 (2014)], was proposed, where the security can be guaranteed without monitoring any statistics. In this Letter, we investigate source imperfections and side-channel attacks on the source of this protocol. We show that only three assumptions are needed for the security, and no detailed characterizations of the source or the side-channel attacks are needed. This high robustness is another striking advantage of the RRDPS protocol over other protocols.

The new version can deal with sending pulses that are classically correlated with each other in an arbitrary manner

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Cited by in corpus (15)

• Practical challenges in quantum key distribution
• Quantum cryptography: key distribution and beyond
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• Practical round-robin differential-phase-shift quantum key distribution
• Detector-decoy quantum key distribution without monitoring signal disturbance
• Remote preparation of $W$ states from imperfect bipartite sources
• Security of round-robin differential-phase-shift quantum key distribution protocol with correlated light sources
• Quantum key distribution with simply characterized light sources
• A security proof of the round-robin differential phase shift quantum key distribution protocol based on the signal disturbance
• Refined security proof of the round-robin differential phase shift quantum key distribution and its improved performance in the finite-sized case
• Decoy-state round-robin differential-phase-shift quantum key distribution with source errors
• High-dimensional Encoding in the Round-Robin Differential-Phase-Shift Protocol
• Differential-phase-shift QKD with practical Mach-Zehnder interferometer
• Critical behaviour in the optimal generation of multipartite entanglement
• A generic construction of quantum-oblivious-key-transfer-based private query with ideal database security and zero failure