• Apr 18 2012

    Stellenbosch Node Seminar: Profs D. Marcus Appleby and Prof Christopher A. Fuchs (Perminter Institute, Canada)

    NITheP cordially invites you to a seminar by:


    Prof D. Marcus Appleby and Prof Christopher A. Fuchs

    Perimeter Institute for Theoretical Physics
    Waterloo, Canada
    http://perimeterinstitute.ca/personal/cfuchs/



    Date: Wednesday 18th of April 2012
    Time: 14:00
    Venue: NITheP Stellenbosch Node, Seminar Room



    TITLE: Quantum Theory in a New Frame




    ABSTRACT: Physicists have become accustomed to the idea that a theory's content is always most transparent when written in coordinate-free language. Sometimes, though, the choice of a good coordinate system can be useful for settling various deep conceptual issues. This is particularly so for information-theory oriented approaches to the foundations of quantum theory. This talk will motivate the search for one such coordinate system for finite dimensional quantum theory, the key arena for quantum information and computing. These are the so-called Symmetric Informationally Complete (SIC) quantum measurements. What is particularly surprising is how their existence would allow a rewriting of the quantum mechanical Born rule to be a formula purely in terms of probabilities, instead of as usual, a formula in terms of complex quantum states and operators. Unfortunately it has been an open mathematical problem for over 35 years as to whether these mathematical objects do indeed always exist. However, much progress has been made recently. We will sketch several of these recent developments.


    Relevant papers:

    http://arxiv.org/abs/0707.2071

    http://arxiv.org/abs/quant-ph/0412001

    Self-serving link where the book can be bought:

    http://www.amazon.com/Coming-Age-With-Quantum-Information/dp/0521199263





    Navrae/Enquiries: René Kotzé
    Tel: 021 808 2653
    Email: renekotze@sun.ac.za