Higher key rate of measurement-device-independent quantum key distribution through joint data processing

Abstract

We propose a method named as double-scanning method, to improve the key rate of measurement-device-independent quantum key distribution (MDI-QKD) drastically. In the method, two parameters are scanned simultaneously to tightly estimate the counts of single-photon pairs and the phase-flip error rate jointly. Numerical results show that the method in this work can improve the key rate by $35\%-280\%$ in a typical experimental set-up. Besides, we study the optimization of MDI-QKD protocol with all parameters including the source parameters and failure probability parameters, over symmetric channel or asymmetric channel. Compared with the optimized results with only the source parameters, the all-parameter-optimization method could improve the key rate by about $10\%$.

References in corpus (55)

• Quantum Cryptography
• The Security of Practical Quantum Key Distribution
• Simple Proof of Security of the BB84 Quantum Key Distribution Protocol
• Decoy State Quantum Key Distribution
• Measurement-device-independent quantum key distribution
• Quantum Communication
• Advances in Quantum Cryptography
• Satellite-to-ground quantum key distribution
• Quantum Key Distribution with High Loss: Toward Global Secure Communication
• Secure quantum key distribution with realistic devices
• Beating the PNS attack in practical quantum cryptography
• Security Aspects of Practical Quantum Cryptography
• Field test of quantum key distribution in the Tokyo QKD Network
• 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
• Tight Finite-Key Analysis for Quantum Cryptography
• Quantum Cryptography with Coherent States
• Full-field implementation of a perfect eavesdropper on a quantum cryptography system
• High-rate quantum cryptography in untrusted networks
• Experimental measurement-device-independent quantum key distribution
• Finite-key analysis for measurement-device-independent quantum key distribution
• Concise Security Bounds for Practical Decoy-State Quantum Key Distribution
• Quantum information with Gaussian states
• Experimental Long-Distance Decoy-State Quantum Key Distribution Based On Polarization Encoding
• Experimental Demonstration of Polarization Encoding Measurement-Device-Independent Quantum Key Distribution
• Quantum cryptography with finite resources: unconditional security bound for discrete-variable protocols with one-way post-processing
• Long distance decoy state quantum key distribution in optical fiber
• Real-world two-photon interference and proof-of-principle quantum key distribution immune to detector attacks
• Making the decoy-state measurement-device-independent quantum key distribution practically useful
• Quantum cryptography without detector vulnerabilities using optically-seeded lasers
• Metropolitan all-pass and inter-city quantum communication network
• 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
• Loss-tolerant quantum cryptography with imperfect sources
• Long-distance free-space measurement-device-independent quantum key distribution
• Simple and efficient quantum key distribution with parametric down-conversion
• Phase encoding schemes for measurement device independent quantum key distribution and basis-dependent flaw
• Practical aspects of measurement-device-independent quantum key distribution
• Chip-based measurement-device-independent quantum key distribution
• General theory of decoy-state quantum cryptography with source errors
• Security of decoy-state quantum key distribution with inexactly controlled source
• Improved statistical fluctuation analysis for measurement-device-independent quantum key distribution with three-intensity decoy-state method
• Experimental quantum key distribution without monitoring signal disturbance
• Concise and Tight Security Analysis of the Bennett-Brassard 1984 Protocol with Finite Key Lengths
• Decoy-state quantum key distribution with both source errors and statistical fluctuations
• Asymmetric Protocols for Scalable High-Rate Measurement-Device-Independent Quantum Key Distribution Networks
• Simple protocol for secure decoy-state quantum key distribution with a loosely controlled source
• Measurement-device-independent quantum key distribution with source state errors and statistical fluctuation
• Measurement-device-independent quantum key distribution with source state errors in photon number space
• Full Implementation of four-intensity Protocol for Measurement-Device-Independent Quantum Key Distribution over Asymmetric Channel
• Decoy-state quantum key distribution with biased-bases revisited
• Decoy State Quantum Key Distribution With More Than Three Types Of Photon Intensity Pulses
• Security Of Finite-Key-Length Measurement-Device-Independent Quantum Key Distribution Using Arbitrary Number Of Decoys

Cited by in corpus (12)

• Unbalanced-basis-misalignment tolerant measurement-device-independent quantum key distribution
• Composable security for practical quantum key distribution with two way classical communication
• Advantages of Asynchronous Measurement-Device-Independent Quantum Key Distribution in Intercity Networks
• Mode-pairing quantum key distribution with advantage distillation
• Feasibility of space-based measurement-device-independent quantum key distribution
• Experimental Measurement-Device-Independent Quantum Cryptographic Conferencing
• Efficient Quantum Digital Signatures over Long Distances with Likely Bit Strings
• Measurement-Device-Independenization of Quantum Key Distribution Protocols
• Asynchronous measurement-device-independent quantum digital signatures
• Phase-Matching Quantum Key Distribution without Intensity Modulation
• Experimental measurement-device-independent quantum key distribution with the double-scanning method
• Optimizing Epsilon Security Parameters in QKD