Simple security proof of coherent-one-way quantum key distribution
arXiv:2107.09329 · doi:10.1364/OE.461669
Abstract
Coherent-one-way quantum key distribution (COW-QKD), which requires a simple experimental setup and has the ability to withstand photon-number-splitting attacks, has been not only experimentally implemented but also commercially applied. However, recent studies have shown that the current COW-QKD system is insecure and can only distribute secret keys safely within 20 km of the optical fiber length. In this study, we propose a practical implementation of COW-QKD by adding a two-pulse vacuum state as a new decoy sequence. This proposal maintains the original experimental setup as well as the simplicity of its implementation. Utilizing detailed observations on the monitoring line to provide an analytical upper bound on the phase error rate, we provide a high-performance COW-QKD asymptotically secure against coherent attacks. This ensures the availability of COW-QKD within 100 km and establishes theoretical foundations for further applications.
arXiv comment8 pages, 5 figures, 1 table, Typos corrected
References in corpus (53)
- The Security of Practical Quantum Key Distribution
- Decoy State Quantum Key Distribution
- Measurement-device-independent quantum key distribution
- Advances in Quantum Cryptography
- 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
- General Benchmarks for Quantum Repeaters
- Fundamental Limits of Repeaterless Quantum Communications
- Overcoming the rate-distance barrier of quantum key distribution without using quantum repeaters
- Security Aspects of Practical Quantum Cryptography
- Hacking commercial quantum cryptography systems by tailored bright illumination
- Measurement device independent quantum key distribution over 404 km optical fibre
- Quantum cryptography protocols robust against photon number splitting attacks for weak laser pulses implementations
- Secure quantum key distribution over 421 km of optical fiber
- Side-channel-free quantum key distribution
- The operational meaning of min- and max-entropy
- Tight Finite-Key Analysis for Quantum Cryptography
- Provably Secure and Practical Quantum Key Distribution over 307 km of Optical Fibre
- The Uncertainty Relation for Smooth Entropies
- Sending or not sending: twin-field quantum key distribution with large misalignment error
- Provably-Secure and High-Rate Quantum Key Distribution with Time-Bin Qudits
- Fast and simple one-way Quantum Key Distribution
- High rate, long-distance quantum key distribution over 250km of ultra low loss fibres
- Experimental quantum key distribution beyond the repeaterless secret key capacity
- Making the decoy-state measurement-device-independent quantum key distribution practically useful
- Direct and Reverse Secret-Key Capacities of a Quantum Channel
- Phase-Matching Quantum Key Distribution
- Twin-field Quantum Key Distribution without Phase Post-Selection
- Attacking practical quantum key distribution system with wavelength dependent beam splitter and multi-wavelength sources
- Simple security analysis of phase-matching measurement-device-independent quantum key distribution
- Source-independent quantum random number generation
- Squashing Models for Optical Measurements in Quantum Communication
- Unconditional security of coherent-state quantum key distribution with strong phase-reference pulse
- A fast and versatile QKD system with hardware key distillation and wavelength multiplexing
- Simple 2.5 GHz time-bin quantum key distribution
- High speed coherent one-way quantum key distribution prototype
- Measurement-Device-Independent Twin-Field Quantum Key Distribution
- Upper Bounds for the Security of two Distributed-Phase Reference Protocols of Quantum Cryptography (Coherent-One-Way and Differential-Phase-Shift)
- Unconditionally secure key distillation from multi-photons
- One-Shot Classical Data Compression with Quantum Side Information and the Distillation of Common Randomness or Secret Keys
- Characterising the correlations of prepare-and-measure quantum networks
- Security of distributed-phase-reference quantum key distribution
- Security proof for a simplified BB84-like QKD protocol
- Coherent-State-Based Twin-Field Quantum Key Distribution
- Encoding-side-channel-free and measurement-device-independent quantum key distribution
- Upper security bounds for coherent-one-way quantum key distribution
- Experimental composable security decoy-state quantum key distribution using time-phase encoding
- Modulator-free coherent-one-way quantum key distribution
- Security of quantum key distribution with multiphoton components
- Zero-error attack against coherent-one-way quantum key distribution
- Security evaluation of quantum key distribution with weak basis-choice flaws
- Experimental 4-intensity decoy-state quantum key distribution with asymmetric basis detector efficiency
Cited by in corpus (9)
- High-dimensional coherent one-way quantum key distribution
- Finite-Key Analysis for Coherent One-Way Quantum Key Distribution
- Quantum key distribution based on orthogonal state encoding
- Experimental Coherent One-Way Quantum Key Distribution with Simplicity and Practical Security
- Hacking coherent-one-way quantum key distribution with present-day technology
- Simulations of distributed-phase-reference quantum key distribution protocols
- High-Fidelity Coherent-One-Way QKD Simulation Framework for 6G Networks: Bridging Theory and Reality
- Photonic quantum information with time-bins: Principles and applications
- Increasing the secret key rates and point-to-multipoint extension for experimental coherent-one-way quantum key distribution protocol