Efficient passive measurement-device-independent quantum key distribution
arXiv:1902.05243 · doi:10.1103/PhysRevA.99.052325
Abstract
The measurement-device-independent quantum key distribution (MDI-QKD) possesses the highest security among all practical quantum key distribution protocols. However, existing multi-intensity decoy-state methods may cause loopholes when modulating light intensities with practical devices. In this paper, we propose a passive decoy-state MDI-QKD protocol based on a novel structure of heralded single-photon sources. It does not need to modulate the light source into different intensities and thus can avoid leaking modulation information of decoy states to eavesdroppers, enhancing the security of practical MDI-QKD. Furthermore, by combining the passive decoy states and biased basis choices, our protocol can exhibit distinct advantages compared with state-of-the art MDI-QKD schemes even when the finite key-size effect is taken into account. Therefore, our present passive decoy-state MDI-QKD seems a promising candidate for practical implementation of quantum key distributions in the near future.
References in corpus (24)
- Simple Proof of Security of the BB84 Quantum Key Distribution Protocol
- Decoy State Quantum Key Distribution
- Measurement-device-independent quantum key distribution
- Unconditional Security Of Quantum Key Distribution Over Arbitrarily Long Distances
- Quantum Key Distribution with High Loss: Toward Global Secure Communication
- Beating the PNS attack in practical quantum cryptography
- Hacking commercial quantum cryptography systems by tailored bright illumination
- Measurement device independent quantum key distribution over 404 km optical fibre
- Secure quantum key distribution over 421 km of optical fiber
- Side-channel-free quantum key distribution
- Quantum Cryptography with Coherent States
- Full-field implementation of a perfect eavesdropper on a quantum cryptography system
- Finite-key analysis for measurement-device-independent quantum key distribution
- Making the decoy-state measurement-device-independent quantum key distribution practically useful
- Three-intensity decoy state method for device independent quantum key distribution with basis dependent errors
- Protocol choice and parameter optimization in decoy-state measurement-device-independent quantum key distribution
- Simple and efficient quantum key distribution with parametric down-conversion
- Improved statistical fluctuation analysis for measurement-device-independent quantum key distribution with three-intensity decoy-state method
- Passive decoy state quantum key distribution: Closing the gap to perfect sources
- Practical gigahertz quantum key distribution robust against channel disturbance
- Passive decoy state quantum key distribution with practical light sources
- Measurement-device-independent quantum key distribution with source state errors and statistical fluctuation
- Experimental Demonstration of Passive-Decoy-State Quantum-Key-Distribution with Two Independent Lasers
- A passive transmitter for quantum key distribution with coherent light