Probing the topological Anderson transition with quantum walks
- URL: http://arxiv.org/abs/2102.01176v2
- Date: Mon, 14 Jun 2021 16:25:08 GMT
- Title: Probing the topological Anderson transition with quantum walks
- Authors: Dmitry Bagrets, Kun Woo Kim, Sonja Barkhofen, Syamsundar De, Jan
Sperling, Christine Silberhorn, Alexander Altland, Tobias Micklitz
- Abstract summary: We consider one-dimensional quantum walks in optical linear networks with synthetically introduced disorder and tunable system parameters.
The option to directly monitor the walker's probability distribution makes this optical platform ideally suited for the experimental observation of the unique signatures of the one-dimensional topological Anderson transition.
- Score: 48.7576911714538
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: We consider one-dimensional quantum walks in optical linear networks with
synthetically introduced disorder and tunable system parameters allowing for
the engineered realization of distinct topological phases. The option to
directly monitor the walker's probability distribution makes this optical
platform ideally suited for the experimental observation of the unique
signatures of the one-dimensional topological Anderson transition. We
analytically calculate the probability distribution describing the quantum
critical walk in terms of a (time staggered) spin polarization signal and
propose a concrete experimental protocol for its measurement. Numerical
simulations back the realizability of our blueprint with current date
experimental hardware.
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