Intelligent Systems Seminar: Ultimate Communication Capacity of Quantum Optical Channels

Speaker: Raúl García-Patrón, Université Libre de Bruxelles
UCL Contact: Simone Severini (Visitors from outside UCL please email in advance).
Date/Time: 30 Oct 14, 11:00 - 12:00
Venue: 6.12

Abstract

Optical channels, such as fibers or free-space links, are ubiquitous in today's telecommunication networks. A complete physical model of these channels must necessarily take quantum effects into account in order to determine their ultimate performances. Specifically, Gaussian bosonic quantum channels have been extensively studied over the past decades given their importance for practical purposes. In spite of this, a longstanding conjecture on the optimality of Gaussian encodings has yet prevented finding their communication capacity. In this talk we will present a recent result that solves this conjecture and establishes the ultimate achievable bit rate under an energy constraint.

Raúl García-Patrón