3 papers
quant-ph2026
All-photonic quantum key distribution beyond the single-repeater bound
Matthew S. Winnel, Sergio Juárez, Chithrabhanu Perumangatt +2
Quantum protocols require classical signaling, and when classical signals propagate faster than quantum ones, standard rate-loss limits can be surpassed. We introduce an all-photon…
quant-ph2025
Reference-Beam Attacks against Twin-Field Quantum Key Distribution using Optical Injection Locking
Sergio Juárez, Alessandro Marcomini, Mikhail Petrov +5
Twin-Field Quantum Key Distribution (TF-QKD) has become a leading protocol to bring quantum communications to the national scale. The protocol requires the establishment of a share…
quant-ph2024
Quantum geometry of the parameter space: a proposal for curved systems
Joshua Davy-Castillo, Javier A. Cano-Arango, Sergio B. Juárez +2
In this paper, we extend the quantum geometric tensor for parameter-dependent curved spaces to higher dimensions, and introduce an equivalent definition that generalizes the Zanard…