Encoding-side-channel-free and measurement-device-independent quantum key distribution

Abstract

We present a simple protocol where Alice and Bob only needs sending out a coherent state or not-sending out a coherent state to Charlie. There is no bases switching. We show that this protocol is both encoding-state-side-channel free to the source part and measurement-device-independent. We don't have to control exactly the whole space state of the light pulse, which is an impossible task in practice. The protocol is immune to all adverse due to encoding-state imperfections in side-channel space such as the photon frequency spectrum, emission time, propagation direction, spatial angular moment, and so on. Numerical simulation shows that our scheme can reach a side-channel-free result for quantum key distribution over a distance longer than 200 km given the single-photon-interference misalignment error rate of $20\%$.

12 pages, 2 figures

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Cited by in corpus (13)

• Advances in Quantum Cryptography
• Experimental measurement-device-independent type quantum key distribution with flawed and correlated sources
• Experimental quantum e-commerce
• Zigzag approach to higher key rate of sending-or-not-sending twin field quantum key distribution with finite key effects
• Simple security proof of coherent-one-way quantum key distribution
• Experimental Side-Channel-Free Quantum Key Distribution
• Measurement-device-independent quantum key distribution with insecure sources
• Security framework for quantum key distribution with imperfect sources
• Twin-field quantum key distribution with passive-decoy state
• Sending-or-not-sending twin-filed quantum key distribution with discrete phase modulation
• Sending or not sending twin-field quantum key distribution with distinguishable decoy states
• Quantum counterfactuality with identical particles
• Source-independent quantum key distribution without pre-sending entanglement