Twin-field Quantum Key Distribution without Phase Post-Selection

Abstract

Twin-field quantum key distribution (TF-QKD) protocol and its variants, e.g. phase-matching (PM) QKD and TF-QKD based on sending or not sending, are highly attractive since they are able to overcome the well-known rate-loss limit for QKD protocols without repeater: $R=O(\eta )$ with $\eta$ standing for the channel transmittance. However, all these protocols require active phase randomization and post-selection that play an essential role together in their security proof. Counterintuitively, we find that in TF-QKD, beating the rate-loss limit is still possible even if phase randomization and post-selection in the coding mode are both removed, which means our final secure key rate $R=O(\sqrt{\eta })$. Furthermore, our protocol is more feasible in practice and more promising according to its higher final key rate in the valid distance. Our security proof counters collective attack and can also counter coherent attack in asymptotical case

References in corpus (23)

• 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 Key Distribution with High Loss: Toward Global Secure Communication
• 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
• Measurement device independent quantum key distribution over 404 km optical fibre
• Side-channel-free quantum key distribution
• Provably Secure and Practical Quantum Key Distribution over 307 km of Optical Fibre
• High-rate quantum cryptography in untrusted networks
• Fundamental rate-loss tradeoff for optical quantum key distribution
• Unknown Quantum States: The Quantum de Finetti Representation
• Sending or not sending: twin-field quantum key distribution with large misalignment error
• Post-selection technique for quantum channels with applications to quantum cryptography
• High rate, long-distance quantum key distribution over 250km of ultra low loss fibres
• Making the decoy-state measurement-device-independent quantum key distribution practically useful
• Phase-Matching Quantum Key Distribution
• 2-GHz clock quantum key distribution over 260 km of standard telecom fiber
• Simple security analysis of phase-matching measurement-device-independent quantum key distribution
• Quantum key distribution over a 72 dB channel loss using ultralow dark count superconducting single-photon detectors

Cited by in corpus (76)

• Advances in Quantum Cryptography
• Secure quantum key distribution with realistic devices
• Quantum repeaters: From quantum networks to the quantum internet
• Sending-or-Not-Sending with Independent Lasers: Secure Twin-Field Quantum Key Distribution Over 509 km
• Breaking the Rate-Loss Bound of Quantum Key Distribution with Asynchronous Two-Photon Interference
• 600 km repeater-like quantum communications with dual-band stabilisation
• Proof-of-principle experimental demonstration of twin-field type quantum key distribution
• Beating the fundamental rate-distance limit in a proof-of-principle quantum key distribution system
• Experimental Quantum Communication Overcomes the Rate-loss Limit without Global Phase Tracking
• Coherent phase transfer for real-world twin-field quantum key distribution
• Twin-field quantum key distribution without optical frequency dissemination
• Improved results for sending-or-not-sending twin-field quantun key distribution: breaking the absolute limit of repeaterless key rate
• Unconditional security of sending or not sending twin-field quantum key distribution with finite pulses
• Universal Limitations on Quantum Key Distribution over a Network
• Measurement-device-independent quantum key distribution for nonstandalone networks
• Conference key agreement with single-photon interference
• Tight finite-key security for twin-field quantum key distribution
• Twin-field quantum key distribution without phase locking
• Versatile security analysis of measurement-device-independent quantum key distribution
• Coherent-State-Based Twin-Field Quantum Key Distribution
• Proof-of-principle experimental demonstration of twin-field quantum key distribution over optical channels with asymmetric losses
• General sending-or-not-sending twin field protocol for quantum key distribution with asymmetric source parameters
• Asymmetric sending or not-sending twin-field quantum key distribution in practice
• Symmetry-protected privacy: beating the rate-distance linear bound over a noisy channel
• Secure Quantum Secret Sharing without Signal Disturbance Monitoring
• Practical decoy-state method for twin-field quantum key distribution
• Experimental demonstration of drone-based quantum key distribution
• Optimized protocol for twin-field quantum key distribution
• Finite-key analysis for twin-field quantum key distribution with composable security
• Zigzag approach to higher key rate of sending-or-not-sending twin field quantum key distribution with finite key effects
• Twin-field quantum digital signatures
• Composable security for practical quantum key distribution with two way classical communication
• Asymmetric twin-field quantum key distribution
• Phase-Matching Quantum Cryptographic Conferencing
• Long-distance twin-field quantum key distribution with entangled sources
• Upper security bounds for coherent-one-way quantum key distribution
• Finite-key Analysis for Quantum Conference Key Agreement with Asymmetric Channels
• Advantages of Asynchronous Measurement-Device-Independent Quantum Key Distribution in Intercity Networks
• Practical Quantum Key Distribution Secure Against Side-Channels
• Zero-error attack against coherent-one-way quantum key distribution
• Simple security proof of coherent-one-way quantum key distribution
• Overcoming the rate-distance limit of device-independent quantum key distribution
• Twin-field quantum key distribution with fully discrete phase randomization
• Scalable High-Rate Twin-Field Quantum Key Distribution Networks without Constraint of Probability and Intensity
• Mode-pairing quantum key distribution with advantage distillation
• Improving the performance of Twin-Field Quantum Key Distribution
• Surpassing the repeaterless bound with a photon-number encoded measurement-device-independent quantum key distribution protocol
• Overcoming fundamental bounds on quantum conference key agreement
• Memory-assisted long-distance phase-matching quantum key distribution
• Finite-Key Analysis for Coherent One-Way Quantum Key Distribution
• A universal simulating framework for quantum key distribution systems
• Twin-field quantum key distribution with discrete-phase-randomized sources
• Robust twin-field quantum key distribution through sending-or-not-sending
• Recent advances on quantum key distribution overcoming the linear secret key capacity bound
• Differential Phase Shift Quantum Secret Sharing Using a Twin Field with Asymmetric Source Intensities
• Sending-or-not-sending twin-filed quantum key distribution with discrete phase modulation
• Twin-field quantum key distribution with passive-decoy state
• Asymmetric mode-pairing quantum key distribution
• Asynchronous measurement-device-independent quantum key distribution with hybrid source
• Improving the performance of twin-field quantum key distribution with advantage distillation technology
• Beating direct transmission bounds for quantum key distribution with a multiple quantum memory station
• Sending or not sending twin-field quantum key distribution with distinguishable decoy states
• Measurement-Device-Independenization of Quantum Key Distribution Protocols
• Twin-field quantum key distribution with partial phase postselection
• Finite-key analysis for quantum key distribution with discrete phase randomization
• Beating the repeaterless bound with adaptive measurement-device-independent quantum key distribution
• Optical transmitter for time-bin encoding Quantum Key Distribution
• Sending-or-not-sending quantum key distribution with phase postselection
• Entanglement Model for Mode-Pairing Quantum Key Distribution
• Source-Replacement Model for Phase-Matching Quantum Key Distribution
• Optimal supplier of single-error-type entanglement via coherent-state transmission
• Quantum counterfactuality with identical particles
• Finite-key analysis for twin-field quantum key distribution based on generalized operator dominance condition
• On High-Dimensional Twin-Field Quantum Key Distribution
• Capacity-Achieving Entanglement Purification Protocol for Pauli Dephasing Channel
• Security Analysis of Mode-Pairing Quantum Key Distribution with Flexible Pairing Strategy