Optical nonclassicality as a resource

Event Details
Event Date
Speaker Name/Affiliation
Benjamin Yadim / University of Nottingham
Seminar Type/Subject
Seminar Type
Event Details & Abstracts

Genuinely quantum states of light can be distinguished via the criterion proposed in the 1960s by Glauber and Sudarshan: so-called classical states in optics are those obtained as probabilistic mixtures of coherent states.  Any other state is called nonclassical and has the potential to be a resource for quantum-enhanced information processing. In this talk, I will present recent work that places nonclassicality on a solid footing within modern quantum information theory.  I will describe a framework in which nonclassical states are viewed as valuable commodities in a laboratory where only linear elements are available.  This setting motivates novel quantifiers of nonclassicality and leads to fundamental constraints on the ability of linear optics to process nonclassical states.