Composable security for practical quantum key distribution with two way classical communication
arXiv:2102.00739 · doi:10.1088/1367-2630/ac0285
Abstract
We present methods to strictly calculate the finite-key effects in quantum key distribution (QKD) with error rejection through two-way classical communication (TWCC) for the sending-or-not-sending twin-field protocol. Unlike the normal QKD without TWCC, here the probability of tagging or untagging for each two-bit random group is not independent. We rigorously solve this problem by imagining a virtual set of bits where every bit is independent and identical. We show the relationship between the outcome starting from this imagined set containing independent and identical bits and the outcome starting with the real set of non-independent bits. With explicit formulas, we show that simply applying Chernoff bound in the calculation gives correct key rate, but the failure probability changes a little bit.
References in corpus (49)
- Quantum Cryptography
- The Security of Practical Quantum Key Distribution
- Decoy State Quantum Key Distribution
- Measurement-device-independent quantum key distribution
- Advances in Quantum Cryptography
- Unconditional Security Of Quantum Key Distribution Over Arbitrarily Long Distances
- 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
- 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
- Secure quantum key distribution over 421 km of optical fiber
- Side-channel-free quantum key distribution
- Tight Finite-Key Analysis for Quantum Cryptography
- Finite-key analysis for measurement-device-independent quantum key distribution
- Concise Security Bounds for Practical Decoy-State Quantum Key Distribution
- Sending or not sending: twin-field quantum key distribution with large misalignment error
- Sending-or-Not-Sending with Independent Lasers: Secure Twin-Field Quantum Key Distribution Over 509 km
- Symmetry implies independence
- Experimental quantum key distribution beyond the repeaterless secret key capacity
- Making the decoy-state measurement-device-independent quantum key distribution practically useful
- Experimental Twin-Field Quantum Key Distribution Through Sending-or-Not-Sending
- Twin-field Quantum Key Distribution without Phase Post-Selection
- 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
- Proof-of-principle experimental demonstration of twin-field type quantum key distribution
- Phase encoding schemes for measurement device independent quantum key distribution and basis-dependent flaw
- Practical aspects of measurement-device-independent quantum key distribution
- Beating the fundamental rate-distance limit in a proof-of-principle quantum key distribution system
- Locking of accessible information and implications for the security of quantum cryptography
- Composability in quantum cryptography
- Improved statistical fluctuation analysis for measurement-device-independent quantum key distribution with three-intensity decoy-state method
- Improved results for sending-or-not-sending twin-field quantun key distribution: breaking the absolute limit of repeaterless key rate
- Sending-or-not twin-field quantum key distribution in practice
- Unconditional security of sending or not sending twin-field quantum key distribution with finite pulses
- Quantum key distribution with 2-bit quantum codes
- Key distillation from quantum channels using two-way communication protocols
- Security of quantum key distribution protocols using two-way classical communication or weak coherent pulses
- Higher key rate of measurement-device-independent quantum key distribution through joint data processing
- Versatile security analysis of measurement-device-independent quantum key distribution
- General sending-or-not-sending twin field protocol for quantum key distribution with asymmetric source parameters
- Vortices, tunneling and deconfinement in bilayer excitonic quantum Hall superfluid
- Zigzag approach to higher key rate of sending-or-not-sending twin field quantum key distribution with finite key effects
- Structural physical approximations and entanglement witnesses
- Theory of doped Mott insulators: duality between pairing and magnetism
- Application of an Improved Version of McDiarmid Inequality in Finite-Key-Length Decoy-State Quantum Key Distribution
Cited by in corpus (10)
- Experimental Twin-Field Quantum Key Distribution Over 1000 km Fiber Distance
- 600 km repeater-like quantum communications with dual-band stabilisation
- Quantum key distribution surpassing the repeaterless rate-transmittance bound without global phase locking
- Microsatellite-based real-time quantum key distribution
- Quantum key distribution over 658 km fiber with distributed vibration sensing
- Twin-field quantum key distribution without phase locking
- 1002 km Twin-Field Quantum Key Distribution with Finite-Key Analysis
- Robust twin-field quantum key distribution through sending-or-not-sending
- Twin-field quantum key distribution with partial phase postselection
- Sending-or-not-sending quantum key distribution with phase postselection