Quantum theory in the landscape of probabilistic theories

6 03/2014

Thursday, 06 Mar. 2014, 15:00 - 16:00

Workgroup Brukner Group

Presenter: Howard Barnum University of New Mexico
Host: Prof. Caslav Brukner
Where: IQOQI-Seminarraum, 2nd floor Boltzmanngasse 3, 1090 Vienna

Much current research is devoted to understanding the power of quantum information processing, and the nature of quantum theory, by situating it within a broader landscape of theories based on describing systems with convex sets of states and of measurement outcomes.

I will review results, primarily ones by me and my collaborators, in this framework.  Some properties of quantum theory, such as no-cloning, no-broadcasting, and an information-disturbance tradeoff are generically non-classical; others such as teleportation and Schroedingerian steering are far more special.  Properties of entropy limiting the strength of quantum violations of Bell-type inequalities, and a characterization of quantum theory in terms of four simple physically appealing axioms will be briefly summarized.

Joint work with various groups of collaborators including Jonathan Barrett, Matthew Leifer, Alexander Wilce, Philip Gaebler, Markus Mueller, Cozmin Ududec.