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  • Matthew Saul Leifer

    • Home 12A Greenlawns Moss Hall Grove London N12 8PA
    • Home +44 208 343 8062
    • Cell +44 7847 503 886
    • Email matt@mattleifer.info
    • Homepage http://www.mattleifer.info
    • Last Updated: 4th August 2010

  • Personal Details

    • Date of Birth

      • 30th Jan. 1978

    • Nationality

      • British

  • Academic Positions

    • April 2008 – present
      On leave of absence from postdoc for health reasons
    • Jan. 2007 – April 2008
      IQC/Dept. of Applied Math, Univ. Waterloo Postdoctoral Fellow in Quantum Information Theory
      Waterloo, ON, Canada
    • Jan. 2007 – April 2008
      Perimeter Institute for Theoretical Physics Associate Postdoctoral Fellow in Quantum Foundations
      Waterloo, ON, Canada
    • Oct. 2006 – Jan. 2007
      Centre for Quantum Computing, DAMTP, Univ. Cambridge Research Associate in Quantum Information Theory and Quantum Foundations
      Cambridge, UK
    • Jan. 2004 – Sep. 2006
      Perimeter Institute for Theoretical Physics Postdoctoral Fellow in Quantum Information Theory and Quantum Foundations
      Waterloo, ON, Canada
    • Nov. 2003 – Dec. 2003
      School of Mathematics, Univ. Bristol Research Assistant in Quantum Information Theory
      Bristol, UK

  • Education

    • Oct. 2000 – Oct. 2003
      University of Bristol Ph.D. Mathematics
      Bristol, UK
      • Advisor: Prof. Noah Linden
      • Thesis title: Entangled Quantum Dynamics
      • http://mattleifer.info/wordpress/wp-content/uploads/2008/11/mleiferthesis.pdf
    • Sept. 1999 – July 2000
      University of Cambridge Cert. of Advanced Studies in Mathematics
      Cambridge, UK
      • Passed with distinction
    • Sept. 1996 – July 1999
      University of Manchester B.Sc. Physics with Theoretical Physics
      Manchester, UK
      • Passed with 1st class hons.

  • Published Articles In Refereed Journals

    • H. Barnum, J. Barrett, L. Clark, M. Leifer, R. Spekkens, N. Stepanik, A. Wilce and R. Wilke. 2010. Entropy and information causality in general probabilistic theories. New J. Phys. 12: 033024. eprint arXiv:0909.5075.
    • J. Barrett and M. Leifer. 2009. The de Finetti Theorem for Test Spaces. New J. Phys. 11: 033024. eprint arXiv:0712.2265.
    • M. S. Leifer and D. Poulin. 2008. Quantum Graphical Models and Belief Propagation. Ann. Phys. 323: 1899. eprint arXiv:0708.1337.
    • H. Barnum, J. Barrett, M. Leifer and A. Wilce. 2007. Generalized No-Broadcasting Theorem. Phys. Rev. Lett. 99: 240501. eprint arXiv:0707.0620.
    • M. S. Leifer. 2006. Quantum Dynamics as an analog of Conditional Probability. Phys. Rev. A. 74: 042310. eprint arXiv:quant-ph/0606022.
    • J. Barrett, M. Leifer and R. Tumulka. 2005. Bell's Jump Process in Discrete Time. Europhys. Lett. 72: 685—690. eprint arXiv:quant-ph/0506066.
    • M. S. Leifer and R. W. Spekkens. 2005. Logical Pre- and Post-Selection paradoxes, measurement-disturbance and contextuality. Proceedings of Quantum Structures 2004, Int. J. Theor. Phys. 44: 1977—1987. eprint arXiv:quant-ph/0412179.
    • M. S. Leifer and R. W. Spekkens. 2005. Pre- and Post-Selection paradoxes and contextuality in quantum mechanics. Phys. Rev. Lett. 95: 200405. eprint arXiv:quant-ph/0412178.
    • M. S. Leifer, N. Linden and A. Winter. 2004. Measuring polynomial invariants of multi-party quantum states. Phys. Rev. A. 69: 052304. eprint arXiv:quant-ph/0308008.
    • M. S. Leifer, L. Henderson and N. Linden. 2003. Optimal entanglement generation from quantum operations. Phys. Rev. A. 67: 012306. eprint arXiv:quant-ph/0205055.
    • C. H. Bennett, J. I. Cirac, M. S. Leifer, D. W. Leung, N. Linden, S. Popescu and G. Vidal. 2002. Optimal simulation of two-qubit Hamiltonians using general local operations. Phys. Rev. A. 66: 012305. eprint arXiv:quant-ph/0107035.

  • Articles In Conference Proceedings

    • H. Barnum, O. Dahlsten, M. Leifer and B. Toner. 2008. Nonclassicality without entanglement enables bit commitment. Proc. IEEE Information Thoery Workshop 2008. 386—390. eprint arXiv:0803.1264.
    • M. S. Leifer. 2007. Conditional Density Operators and the Subjectivity of Quantum Operations. in G. Adenier, C. A. Fuchs and A. Yu. Khrenikov (eds.), Foundations of Probability and Physics - 4, AIP Conference Proceedings. 889: 172—186. eprint arXiv:quant-ph/0611233.

  • Preprints

    • H. Barnum, J. Barrett, M. S. Leifer and A. Wilce. 2008. Teleportation in General Probabilistic Thoeries. in Proceedings of the Clifford Lectures, Tulane University, 12-15 March 2008, to appear in Proceedings of Symposia in Applied Mathematics (AMS). eprint arXiv: 0805.3553.
    • H. Barnum, J. Barrett, M. S. Leifer and A. Wilce. 2006. Cloning and Broadcasting in Generic Probabilistic Models. eprint arXiv:quant-ph/0611295.
    • M. S. Leifer. 2005. Nondeterministic testing of Sequential Quantum Logic propositions on a quantum computer. eprint arXiv:quant-ph/0509193.

  • Articles In Progress

    • M. S. Leifer. Quantum Causal Networks.
    • R. Morris and M. S. Leifer. Reverse Distinguishability.
    • M. S. Leifer and R. W. Spekkens. Quantum analogues of Bayes’ theorem, sufficient statistics and the pooling problem.

  • Research Student Supervision

    • Visiting Graduate Students

      • Jan. 2009 – April 2008
        T. Waterhouse, visiting from University of British Columbia — Project: Temporal joint measurements
      • July 2007 – Sept. 2007
        O. Dahlsten, visiting from Imperial College — Project: Unentangled bit commitment in generic probabilistic models

    • Undergraduate Research Students

      • June 2007 – Aug. 2007
        R. Morris, University of Waterloo Undergraduate Research Assistant — Project: Distinguishability as a resource theory

  • Teaching

    • Graduate Lecturing

      • Oct. 2005
        Introduction to Bayesian Networks (three lectures), University of Queensland, Australia

    • Undergraduate Lecturing

      • Sept. 2007 – Dec. 2007
        Lecturer for MATH137, Introductory Calculus for Math Hons., University of Waterloo, Canada
      • Sept. 2006
        Advanced Quantum Mechanics (two lectures covering for lecturers absence), University of Waterloo, Canada
      • March 2005
        Interpretations of Quantum Mechanics: Current Status and Future Directions (guest lecture on quantum logic), University of Waterloo, Canada

    • Undergraduate Tutoring

      • Oct. 2000 – June 2003
        Mathematics 1A (Math for 1st year Physics, Chemistry and Economics students), University of Bristol, UK

    • Undergraduate Computer Lab Demonstrating

      • Oct. 2001 – June 2003
        Mathematics 1A (Maple and Matlab), University of Bristol, UK

  • Competitive Research Grants

    • 2008
      7,500 USD FQXi mini-grant (Foundational Questions Institute http://www.fqxi.org) for APS Invited Session: Quantum Information Meets Gravitation — Role: Principal Investigator.
    • 2007 – 2008
      70,000 USD FQXi award (Foundational Questions Institute http://www.fqxi.org) for project on Abstract Quantum Probability — Role: Principal Investigator.

  • Scholarships And Awards

    • 2000
      Mary Higgins Postgraduate Scholarship and C. B. West Postgraduate Prize in Mathematics, Girton College, Cambridge
    • 1999
      Platt Prize in Physics, University of Manchester
    • 1997
      Heginbottom Exhibition for best performance in 1st year exams in Physics, University of Manchester

  • Academic Service

    • Committees

      • Nov. 2004 – June 2005
        Postdoc representative on postdoc hiring committee, Perimeter Institute, Canada
      • Jan. 2004 – June 2005
        Postdoc representative on quantum information faculty hiring committee, Perimeter Institute, Canada

    • Refereeing for International Journals

      • Foundations of Physics, Journal of Physics A, New Journal of Physics, Philosophy of Science, Physical Review A, Physical Review Letters, Quantum Information and Computation, Studies in the History and Philosophy of Modern Physics

    • Editorial Work

      • Jan 2008 – present
        Member of the editorial board of "The Quantum Times", newsletter of the APS Topical Group on Quantum Information (see http://www.aps.org/units/gqi/newsletters/)

    • Conference, Workshop and Summer School Organization

      • March 2008
        Invited Session on Quantum Information Meets Gravitation, APS March Meeting, New Orleans, USA (co-organized with L. Viola)
      • Aug. 2007
        Quantum Foundations Summer School, Perimeter Institute, Canada (co-organized with H. Burton and L. Hardy)
      • July 2005
        Workshop on Quantum Information, Computation and Logic: Exploring New Connections, Perimeter Institute, Canada (co-organized with H. Barnum)

    • Discussion Group Organization

      • 2004 – 2005
        Contextuality Workgroup of Perimeter Institute Experts (CoWPIE), Perimeter Institute, Canada
      • 2002 – 2003
        Quantum Information Journal Club, University of Bristol, UK

  • Conferences, Workshops and Summer Schools

    • Invited Talks at Conferences and Workshops

      • Dec. 2007
        Mini-workshop on Quantum Foils, Pavia, Italy
      • Dec. 2007
        Quantum Information Theory in Quantum Gravity, Perimeter Institute, Canada
      • July 2007
        Operational Probabilistic Theories as Foils to Quantum Thoery, Cambridge, UK
      • June 2006
        Foundations of Physics and Probability - 4, Växjö, Sweden
      • Aug. 2005
        Being Bayesian In a Quantum World, Konstanz, Germany
      • July 2005
        Quantum Information, Computation and Logic, Perimeter Institute, Canada
      • July 2003
        QuICT Network Meeting, Abingdon, UK

    • Contributed Talks at Conferences, Workshops and Summer Schools

      • Feb. 2007
        Operator Structures in Quantum Information, Banff, Canada
      • July 2006
        Cats, Kets and Cloisters, Oxford, UK
      • July 2006
        Quantum Structures 2006, Malta
      • March 2006
        APS MArch Meeting, Baltimore, USA
      • Aug. 2005
        Summer School on Philosophy, Probability and Physics, Konstanz, Germany
      • July 2004
        Quantum Structures 2004, Denver, USA
      • July 2003
        4th European QIPC Workshop, Oxford, UK
      • Sept. 2002
        Informal Quantum Information Gathering, Imperial College, London, UK
      • March 2001
        "QuEnt" Quantum Entanglement and Quantum Information Winter School, Les Houches, France

    • Poster Presentations at Conferences and Workshops

      • July 2004
        The Seventh International Conference on Quantum Communication, Measurement and Computing, Glasgow, UK
      • July 2004
        Workshop on Reference Frames and Superselection Rules in Quantum Information Theory, Perimeter Institute, Canada
      • Aug. 2003
        MaPhySto/QUANTOP Workshop on Quantum Measurements and Quantum Stochastics, Aarhus, Denmark
      • July 2002
        The Sixth International Conference on Quantum Communication, Measurement and Computing, MIT, Cambridge, USA
      • July 2002
        Quantum Information: Conceptual Foundations, Developments and Perspectives, Oviedo, Spain

    • Summer Schools Attended

      • Aug. 2005
        Philosophy, Probability and Physics, Konstanz, Germany
      • July 2004
        Foundations of Physical Theories, Urbino, Italy
      • March 2001
        "QuEnt" Quantum Entanglement and Quantum Information Winter School, Les Houches, France

  • References Available On Request