Probing the topological Anderson transition with quantum walks - Kölner UniversitätsPublikationsServer

Bagrets, Dmitry ORCID: 0000-0002-3985-4834, Kim, Kun Woo, Barkhofen, Sonja, De, Syamsundar, Sperling, Jan, Silberhorn, Christine, Altland, Alexander and Micklitz, Tobias (2021). Probing the topological Anderson transition with quantum walks. Phys. Rev. Res., 3 (2). COLLEGE PK: AMER PHYSICAL SOC. ISSN 2643-1564

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DOI:10.1103/PhysRevResearch.3.023183

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.

Item Type:

Journal Article

Creators:

Creators	Email	ORCID	ORCID Put Code
Bagrets, Dmitry	UNSPECIFIED	orcid.org/0000-0002-3985-4834	UNSPECIFIED
Kim, Kun Woo	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED
Barkhofen, Sonja	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED
De, Syamsundar	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED
Sperling, Jan	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED
Silberhorn, Christine	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED
Altland, Alexander	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED
Micklitz, Tobias	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED