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Ultimate communication capacity of quantum optical channels by solving the Gaussian minimum-entropy conjecture
V. Giovannetti, R. Garcia-Patron, N. J. Cerf +1
Optical channels, such as fibers or free-space links, are ubiquitous in today's telecommunication networks. They rely on the electromagnetic field associated with photons to carry…
A solution of the Gaussian optimizer conjecture
V. Giovannetti, A. S. Holevo, R. Garcia-Patron
The long-standing conjectures of the optimality of Gaussian inputs for Gaussian channel and Gaussian additivity are solved for a broad class of covariant or contravariant Bosonic G…
Analysis of circuit imperfections in BosonSampling
Anthony Leverrier, Raúl García-Patrón
BosonSampling is a problem where a quantum computer offers a provable speedup over classical computers. Its main feature is that it can be solved with current linear optics technol…
Equivalence Relations for the Classical Capacity of Single-Mode Gaussian Quantum channels
Joachim Schäfer, Evgueni Karpov, Raúl García-Patrón +2
We prove the equivalence of an arbitrary single-mode Gaussian quantum channel and a newly defined fiducial channel preceded by a phase shift and followed by a Gaussian unitary oper…