Edge states in a two-dimensional quantum walk with disorder

Alberto D. Verga ()
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Alberto D. Verga: Aix Marseille Université, Centre de Physique Théorique, Campus de Luminy

The European Physical Journal B: Condensed Matter and Complex Systems, 2017, vol. 90, issue 3, 1-9

Abstract: Abstract We investigate the effect of spatial disorder on the edge states localized at the interface between two topologically different regions. Rotation disorder can localize the quantum walk if it is strong enough to change the topology, otherwise the edge state is protected. Nonlinear spatial disorder, dependent on the walker’s state, attracts the walk to the interface even for very large coupling, preserving the ballistic transport characteristic of the clean regime.

Keywords: Mesoscopic; and; Nanoscale; Systems (search for similar items in EconPapers)
Date: 2017
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DOI: 10.1140/epjb/e2017-70433-1

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