Project description:
The project will develop new concepts for optical communication systems using recent advances in
quantum information science and quantum optics. The central idea comes from reformulating the
communication task as an identification problem for non-orthogonal quantum states describing
individual inputs rather than transmitting information in classical variables, such as intensity, phase, or
quadratures, whose conventional measurements are bounded by standard quantum limits. Such a
general approach, combined with the currently available toolbox for optical signal processing and
characterisation at the quantum level opens up ways to attain sub-shot noise error rates and
superadditivity of accessible information through joint detection. These objectives will be
complemented by the development of realistic models for optical communication channels and the
analysis of resources in communication protocols.
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