62 citations · 183 across the 19 of their papers we have counts for
19 papers
Phase-error estimation for quantum key distribution with leaky receivers
Álvaro Navarrete, Margarida Pereira, Guillermo Currás-Lorenzo +3
Practical quantum key distribution (QKD) receivers may leak information about their measurement outcomes and settings to the channel (e.g., through detector backflashes or back-ref…
Finite-key security analysis of decoy-state QKD with source and detector imperfections
Xoel Sixto, Guillermo Currás-Lorenzo, Margarida Pereira +3
Decoy-state quantum key distribution (QKD) is the most widely adopted approach for overcoming the limitations of imperfect single-photon sources. However, existing security proofs…
Numerical security analysis for practical quantum key distribution
Álvaro Navarrete, Guillermo Currás-Lorenzo, Margarida Pereira +1
Quantum key distribution (QKD) promises information-theoretic security based on quantum mechanics and idealized device models. Practical implementations, however, deviate from thes…
Security of decoy-state quantum key distribution with correlated bit-and-basis encoders
Guillermo Currás-Lorenzo, Margarida Pereira, Alessandro Marcomini +2
Practical quantum key distribution (QKD) modulators inevitably introduce correlations, causing the state emitted in a given round to depend on the setting choices made in previous…
Phase-error-estimation security framework for quantum key distribution with correlated sources
Guillermo Currás-Lorenzo, Margarida Pereira, Kiyoshi Tamaki +1
Practical QKD modulators introduce correlations between consecutively emitted pulses due to bandwidth limitations, violating key assumptions underlying many security proof techniqu…
Optimal key rates for quantum key distribution with partial source characterization
Margarida Pereira, Guillermo Currás-Lorenzo, Mateus Araújo
Numerical security proofs based on conic optimization are known to deliver optimal secret-key rates, but so far they have mostly assumed that the emitted states are fully character…
Modeling and Characterization of Arbitrary Order Pulse Correlations for Quantum Key Distribution
Ainhoa Agulleiro, Fadri Grünenfelder, Margarida Pereira +4
In quantum key distribution (QKD) implementations, memory effects caused by the limited bandwidth of modulators and/or other active devices can leak information about previous sett…
Security of quantum key distribution with source and detector imperfections through phase-error estimation
Guillermo Currás-Lorenzo, Margarida Pereira, Shlok Nahar +1
Quantum key distribution promises information-theoretic security, but practical implementations face vulnerabilities due to device imperfections. Existing security proofs typically…
Numerical security analysis for quantum key distribution with partial state characterization
Guillermo Currás-Lorenzo, Álvaro Navarrete, Javier Núñez-Bon +2
Numerical security proofs offer a versatile approach for evaluating the secret-key generation rate of quantum key distribution (QKD) protocols. However, existing methods typically…
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…
Quantum key distribution with unbounded pulse correlations
Margarida Pereira, Guillermo Currás-Lorenzo, Akihiro Mizutani +3
A prevalent issue in practical applications of quantum key distribution (QKD) is the emergence of correlations among the emitted signals. Although recent works have proved the secu…
Security framework for quantum key distribution with imperfect sources
Guillermo Currás-Lorenzo, Margarida Pereira, Go Kato +2
Imperfect bit-and-basis encoders compromise the security of quantum key distribution (QKD) systems via modulation flaws, side channels and inter-pulse correlations, which invalidat…
Secret key rate bounds for quantum key distribution with non-uniform phase randomization
Xoel Sixto, Guillermo Currás-Lorenzo, Kiyoshi Tamaki +1
Decoy-state quantum key distribution (QKD) is undoubtedly the most efficient solution to handle multi-photon signals emitted by laser sources, and provides the same secret key rate…
Modified BB84 quantum key distribution protocol robust to source imperfections
Margarida Pereira, Guillermo Currás-Lorenzo, Álvaro Navarrete +4
The Bennett-Brassard 1984 (BB84) protocol is the most widely implemented quantum key distribution (QKD) scheme. However, despite enormous theoretical and experimental efforts in th…
Security of quantum key distribution with imperfect phase randomisation
Guillermo Currás-Lorenzo, Shlok Nahar, Norbert Lütkenhaus +2
The performance of quantum key distribution (QKD) is severely limited by multiphoton emissions, due to the photon-number-splitting attack. The most efficient solution, the decoy-st…
Finite-key analysis of loss-tolerant quantum key distribution based on random sampling theory
Guillermo Currás-Lorenzo, Álvaro Navarrete, Margarida Pereira +1
The core of security proofs of quantum key distribution (QKD) is the estimation of a parameter that determines the amount of privacy amplification that the users need to apply in o…
Twin-field quantum key distribution with fully discrete phase randomization
Guillermo Currás-Lorenzo, Lewis Wooltorton, Mohsen Razavi
Twin-field (TF) quantum key distribution (QKD) can overcome fundamental secret-key-rate bounds on point-to-point QKD links, allowing us to reach longer distances than ever before.…
Tight finite-key security for twin-field quantum key distribution
Guillermo Currás-Lorenzo, Alvaro Navarrete, Koji Azuma +3
Quantum key distribution (QKD) offers a reliable solution to communication problems that require long-term data security. For its widespread use, however, the rate and reach of QKD…