Boosting quantum key distribution via the end-to-end loss control
arXiv:2308.03733 · doi:10.3390/cryptography7030038
Abstract
With the rise of quantum technologies, data security increasingly relies on quantum cryptography and its most notable application, quantum key distribution (QKD). Yet, current technological limitations, in particular, the unavailability of quantum repeaters, cause relatively low key distribution rates in practical QKD implementations. Here, we demonstrate a remarkable improvement in the QKD performance using end-to-end line tomography for the wide class of relevant protocols. Our approach is based on the real-time detection of interventions in the transmission channel, enabling an adaptive response that modifies the QKD setup and post-processing parameters, leading, thereby, to a substantial increase in the key distribution rates. Our findings provide everlastingly secure efficient quantum cryptography deployment potentially overcoming the repeaterless rate-distance limit.
References in corpus (47)
- 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
- Fundamental Limits of Repeaterless Quantum Communications
- General Benchmarks for Quantum Repeaters
- Overcoming the rate-distance barrier of quantum key distribution without using quantum repeaters
- Security Aspects of Practical Quantum Cryptography
- Practical Decoy State for Quantum Key Distribution
- Quantum cryptography protocols robust against photon number splitting attacks for weak laser pulses implementations
- Quantum key distribution over 40 dB channel loss using superconducting single photon detectors
- Security against individual attacks for realistic quantum key distribution
- Secure quantum key distribution over 421 km of optical fiber
- Side-channel-free quantum key distribution
- Provably Secure and Practical Quantum Key Distribution over 307 km of Optical Fibre
- An information-theoretic security proof for QKD protocols
- Security in Quantum Cryptography
- Incoherent and Coherent Eavesdropping in the 6-state Protocol of Quantum Cryptography
- Fast and simple one-way Quantum Key Distribution
- High rate, long-distance quantum key distribution over 250km of ultra low loss fibres
- Breaking the Rate-Loss Bound of Quantum Key Distribution with Asynchronous Two-Photon Interference
- 600 km repeater-like quantum communications with dual-band stabilisation
- Efficient decoy-state quantum key distribution with quantified security
- 10~Mb/s quantum key distribution
- Quantum key distribution surpassing the repeaterless rate-transmittance bound without global phase locking
- Simple security analysis of phase-matching measurement-device-independent quantum key distribution
- Coherent pulse implementations of quantum cryptography protocols resistant to photon number splitting attacks
- Experimental measurement-device-independent type quantum key distribution with flawed and correlated sources
- The Quantum State of an Ideal Propagating Laser Field
- Measurement-Device-Independent Twin-Field Quantum Key Distribution
- Quantum Advantage in Cryptography
- Experimental quantum key distribution with active phase randomization
- Evaluation of the phase randomness of the light source in quantum key distribution systems with an attenuated laser
- Unconditional security of the Bennett 1992 quantum key-distribution scheme with strong reference pulse
- Security of subcarrier wave quantum key distribution against the collective beam-splitting attack
- Security of the decoy state method for quantum key distribution
- H-theorem in quantum physics
- Advantages of Asynchronous Measurement-Device-Independent Quantum Key Distribution in Intercity Networks
- Quantum soft filtering for the improved security analysis of the coherent one-way quantum-key-distribution protocol
- Improving the performance of quantum cryptography by using the encryption of the error correction data
- Scalable High-Rate Twin-Field Quantum Key Distribution Networks without Constraint of Probability and Intensity
- Improving the performance of Twin-Field Quantum Key Distribution
- Forty Thousand Kilometers Under Quantum Protection
- Unconditionally secure quantum key-distribution with relatively strong signal pulse
- Entropy Dynamics in the System of Interacting Qubits
- Analysis of coherent quantum cryptography protocol vulnerability to an active beam-splitting attack
- H-theorem and Maxwell Demon in Quantum Physics