G
Gaetana Spedalieri
Researcher at University of York
Publications - 45
Citations - 1277
Gaetana Spedalieri is an academic researcher from University of York. The author has contributed to research in topics: Quantum entanglement & Quantum. The author has an hindex of 15, co-authored 45 publications receiving 1100 citations. Previous affiliations of Gaetana Spedalieri include Massachusetts Institute of Technology & Centre for Quantum Technologies.
Papers
More filters
Journal ArticleDOI
High-rate measurement-device-independent quantum cryptography
Stefano Pirandola,Carlo Ottaviani,Gaetana Spedalieri,Christian Weedbrook,Samuel L. Braunstein,Seth Lloyd,Tobias Gehring,Christian S. Jacobsen,Ulrik L. Andersen +8 more
TL;DR: A coherent-state network protocol able to achieve remarkably high key rates at metropolitan distances, in fact three orders of magnitude higher than those currently achieved, is designed and proposed.
Journal ArticleDOI
Theory of channel simulation and bounds for private communication
Stefano Pirandola,Samuel L. Braunstein,Riccardo Laurenza,Carlo Ottaviani,Thomas P. W. Cope,Gaetana Spedalieri,Gaetana Spedalieri,Leonardo Banchi,Leonardo Banchi +8 more
TL;DR: In this article, a general weak converse bound for private communication based on the relative entropy of entanglement is proposed, and the authors provide a rigorous proof of the strong converse property of these bounds by adopting a correct use of the Braunstein-Kimble teleportation protocol for the simulation of bosonic Gaussian channels.
Journal ArticleDOI
Optimality of Gaussian discord.
TL;DR: The recently solved conjecture on the bosonic minimum output entropy is exploited to show the optimality of Gaussian discord, so that the computation of quantum discord for bipartite Gaussian states can be restricted to local Gaussian measurements.
Posted Content
On a recent comment on: "Theory of channel simulation and bounds for private communication"
Stefano Pirandola,Samuel L. Braunstein,Riccardo Laurenza,Carlo Ottaviani,Thomas P. W. Cope,Gaetana Spedalieri,Leonardo Banchi +6 more
TL;DR: In this article, the divergence problem in the derivations of the strong converse bound for the secret key capacity of the phase-insensitive Gaussian channels was further confirmed, and the authors briefly confirm why this is the case, and also discuss how basic misinterpretations of previous literature have led this author to this technical error.
Journal ArticleDOI
Continuous-variable quantum cryptography with an untrusted relay: Detailed security analysis of the symmetric configuration
TL;DR: This work analyzes symmetric eavesdropping strategies against the quantum links explicitly showing that, at fixed transmissivity and thermal noise, two-mode coherent attacks are optimal, manifestly outperforming one-mode collective attacks based on independent entangling cloners.