Browsing by Subject "quantum information"

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  • Dziemba, Friederike Anna (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2019)
    QMA is the complexity class of computational problems that are efficiently verifiable by a quantum algorithm with the help of a witness in contrast to the smaller class BQP of problems efficiently solvable by a quantum ...
  • Farrelly, Terry (Bristol : IOP Publishing Ltd., 2016)
    Finding equilibration times is a major unsolved problem in physics with few analytical results. Here we look at equilibration times for quantum gases of bosons and fermions in the regime of negligibly weak interactions, a ...
  • Bény, Cédric (Bristol : Institute of Physics Publishing, 2017)
    A spin system on a lattice can usually be modeled at large scales by an effective quantum field theory. A key mathematical result relating the two descriptions is the quantum central limit theorem, which shows that certain ...
  • Fiedler, Leander; Naaijkens, Pieter; Osborne, Tobias J. (Bristol : Institute of Physics Publishing, 2017)
    We study the total quantum dimension in the thermodynamic limit of topologically ordered systems. In particular, using the anyons (or superselection sectors) of such models, we define a secret sharing scheme, storing ...
  • Weimer, Hendrik (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2018)
    In den letzten Jahren wurden bei der Kontrolle von Quantenzuständen einzelner Atome, Moleküle und Spins in Festkörpern bahnbrechende Erfolge erzielt, und sogar quantenmechanische Verschränkung zwischen einzelnen Quantenobjekten ...
  • Beny, Cedric; Osborne, Tobias J. (Bristol : IOP Publishing Ltd., 2015-08-05)
    In physics, one attempts to infer the rules governing a system given only the results of imperfect measurements. Hence, microscopic theories may be effectively indistinguishable experimentally. We develop an operationally ...
  • Mehmet, Moritz (Hannover : Gottfried Wilhelm Leibniz Universität Hannover, 2012)
    [no abstract]
  • Karnas, Siniša (Hannover : Universität, 2001)
    [no abstract]