13 papers
Preprocessing noise in finite-size quantum key distribution
Gabriele Staffieri, Giuseppe D'Ambruoso, Giovanni Scala +1
It is known that preprocessing noise may boost quantum key distribution by expanding the range of values of tolerated noise. For BB84, adding trusted noise may allow the generation…
Finite-size resource scaling for learning quantum phase transitions with fidelity-based support vector machines
Aaqib Ali, Giovanni Scala, Cosmo Lupo +1
Quantum kernels offer a valid procedure for learning quantum phase transitions on quantum processing devices, yet issues on the scalability of the learning strategy in connection w…
Finite-size secret-key rates of discrete modulation continuous-variable quantum key distribution under Gaussian attacks
Gabriele Staffieri, Giovanni Scala, Cosmo Lupo
Quantum conditional entropies play a fundamental role in quantum information theory. In quantum key distribution, they are exploited to obtain reliable lower bounds on the secret-k…
Finite-size security of QKD: comparison of three proof techniques
Gabriele Staffieri, Giovanni Scala, Cosmo Lupo
We compare three proof techniques for composable finite-size security of quantum key distribution under collective attacks, with emphasis on how the resulting secret-key rates beha…
Dynamical cluster-based strategy for improving tensor network algorithms in quantum circuit simulations
Andrea De Girolamo, Paolo Facchi, Peter Rabl +3
We optimize matrix-product state-based algorithms for simulating quantum circuits with finite fidelity, specifically the time-evolving block decimation (TEBD) and the density-matri…
Optimal and robust error filtration for quantum information processing
Aaqib Ali, Giovanni Scala, Cosmo Lupo
Error filtration is a hardware scheme that mitigates noise by exploiting auxiliary qubits and entangling gates. Although both signal and ancillas are subject to local noise, constr…