91 citations · 199 across the 18 of their papers we have counts for
17 papers · 1 filter
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…
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…
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…
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…
Practical Quantum Key Distribution Secure Against Side-Channels
Álvaro Navarrete, Margarida Pereira, Marcos Curty +1
There is a big gap between theory and practice in quantum key distribution (QKD) because real devices do not satisfy the assumptions required by the security proofs. Here, we close…
Quantum key distribution with correlated sources
Margarida Pereira, Go Kato, Akihiro Mizutani +2
In theory, quantum key distribution (QKD) offers information-theoretic security. In practice, however, it does not due to the discrepancies between the assumptions used in the secu…
Quantum key distribution with flawed and leaky sources
Margarida Pereira, Marcos Curty, Kiyoshi Tamaki
In theory, quantum key distribution (QKD) allows secure communications between two parties based on physical laws. However, most of the security proofs of QKD today make unrealisti…