3 papers
cs.NI2026
Interconnecting Regional QKD Networks: Hybrid Key Delivery Across Quantum Domains
David Barral, Aitor Brazaola-Vicario, Diego Cifrián +9
QKD technology is being increasingly adopted inside the network core for protecting information transport against any form of computational attacks. However, the use of QKD for wid…
quant-ph2026
Quantum Field Theory Universality Criterion for Layered Programmable Decompositions
Javier Ãlvarez-Vizoso, David Barral
The decomposition of arbitrary unitary transformations into sequences of simpler, physically realizable operations is a foundational problem in quantum information science, quantum…
quant-ph2025
Continuous-variable spatio-spectral quantum networks in nonlinear photonic lattices
Natalia Costas, Nadia Belabas, David Barral
Multiplexing information in different degrees of freedom and use of integrated and fiber-optic components are natural solutions to the scalability bottleneck in optical quantum com…