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24 papers · 1 filter
Security loophole in error verification in quantum key distribution
Toyohiro Tsurumaru, Akihiro Mizutani, Toshihiko Sasaki
The security of quantum key distribution (QKD) is evaluated based on the secrecy of Alice's key and the correctness of the keys held by Alice and Bob. A practical method for ensuri…
Loss-tolerant quantum key distribution with detection efficiency mismatch
Alessandro Marcomini, Akihiro Mizutani, Fadri Grünenfelder +2
Current implementations of quantum key distribution (QKD) typically rely on prepare-and-measure (P&M) schemes. Unfortunately, these implementations are not completely secure, unles…
Characterising higher-order phase correlations in gain-switched laser sources with application to quantum key distribution
Alessandro Marcomini, Guillermo Currás-Lorenzo, Davide Rusca +3
Multi-photon emissions in laser sources represent a serious threat for the security of quantum key distribution (QKD). While the decoy-state technique allows to solve this problem,…
Quantum key distribution with imperfectly isolated devices
Xoel Sixto, Álvaro Navarrete, Margarida Pereira +3
Most security proofs of quantum key distribution (QKD) assume that there is no unwanted information leakage about the state preparation process. However, this assumption is impossi…
Tight scaling of key rate for differential-phase-shift quantum key distribution
Akihiro Mizutani, Toyohiro Tsurumaru
The performance of quantum key distribution (QKD) protocols is evaluated based on the ease of implementation and key generation rate. Among major protocols, the differential-phase-…
Differential-phase-shift QKD with practical Mach-Zehnder interferometer
Akihiro Mizutani, Masanori Terashita, Junya Matsubayashi +4
Differential-phase-shift (DPS) quantum key distribution stands as a promising protocol due to its simple implementation, which can be realized with a train of coherent pulses and a…