Auflistung nach Schlagwort "quantum walks"

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  • Decoherence models for discrete-time quantum walks and their application to neutral atom experiments 
    Alberti, Andrea; Alt, Wolfgang; Werner, Reinhard F.; Meschede, Dieter (Bristol : IOP Publishing Ltd., 2014-12-19)
    We discuss decoherence in discrete-time quantum walks in terms of a phenomenological model that distinguishes spin and spatial decoherence. We identify the dominating mechanisms that affect quantum-walk experiments realized ...
  • Eigenvalue measurement of topologically protected edge states in split-step quantum walks 
    Nitsche, Thomas; Geib, Tobias; Stahl, Christoph; Lorz, Lennart; Cedzich, Christopher; Barkhofen, Sonja; Werner, Reinhard F; Silberhorn, Christine (Bristol : Institute of Physics Publishing, 2019)
    We study topological phenomena of quantum walks by implementing a novel protocol that extends the range of accessible properties to the eigenvalues of the walk operator. To this end, we experimentally realise for the first ...
  • Translation invariant quantum walks with discrete symmetries 
    Stahl, Christoph (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2018)
    Quantum walks are discrete-time evolutions of single particles on lattices that transfer the concept of classical random walks to quantum theory. Topological insulators are objects that promise symmetry-protected edge-states ...