Experimental quantum key distribution secure against malicious devices
arXiv:2006.12863 · doi:10.1103/PhysRevApplied.15.034081
Abstract
The fabrication of quantum key distribution (QKD) systems typically involves several parties, thus providing Eve with multiple opportunities to meddle with the devices. As a consequence, conventional hardware and/or software hacking attacks pose natural threats to the security of practical QKD. Fortunately, if the number of corrupted devices is limited, the security can be restored by using redundant apparatuses. Here, we report on the demonstration of a secure QKD setup with optical devices and classical post-processing units possibly controlled by an eavesdropper. We implement a 1.25 GHz chip-based measurement-device-independent QKD system secure against malicious devices on \emph{both} the measurement and the users' sides. The secret key rate reaches 137 bps over a 24 dB channel loss. Our setup, benefiting from high clock rate, miniaturized transmitters and a cost-effective structure, provides a promising solution for widespread applications requiring uncompromising communication security.
arXiv comment28 pages, 5 figures, 4 tables
References in corpus (29)
- Measurement-device-independent quantum key distribution
- Satellite-to-ground quantum key distribution
- Device-independent security of quantum cryptography against collective attacks
- Secure quantum key distribution with realistic devices
- Secure Quantum Key Distribution
- 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
- Tight Finite-Key Analysis for Quantum Cryptography
- Trojan Horse attacks on Quantum Key Distribution systems
- Finite-key analysis for measurement-device-independent quantum key distribution
- Leftover Hashing Against Quantum Side Information
- Experimental quantum key distribution beyond the repeaterless secret key capacity
- Making the decoy-state measurement-device-independent quantum key distribution practically useful
- Quantum cryptography without detector vulnerabilities using optically-seeded lasers
- High-speed measurement-device-independent quantum key distribution with integrated silicon photonics
- Experimental Twin-Field Quantum Key Distribution Through Sending-or-Not-Sending
- Practical issues in quantum-key-distribution post-processing
- Proof-of-principle experimental demonstration of twin-field type quantum key distribution
- Memory Attacks on Device-Independent Quantum Cryptography
- Beating the fundamental rate-distance limit in a proof-of-principle quantum key distribution system
- Improved key rate bounds for practical decoy-state quantum key distribution systems
- Practical security bounds against the Trojan-horse attack in quantum key distribution
- Chip-based measurement-device-independent quantum key distribution
- Chain Rules for Smooth Min- and Max-Entropies
- Quantum Cryptography with Imperfect Apparatus
- Measurement-Device-Independent Quantum Key Distribution with Leaky Sources
- Hong-Ou-Mandel interference between independent III-V on silicon waveguide integrated lasers
- Secure quantum key distribution with a subset of malicious devices