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Disorder-induced Floquet Topological Insulators

Titum, Paraj and Lindner, Netanel H. and Rechtsman, Mikael C. and Refael, Gil (2015) Disorder-induced Floquet Topological Insulators. Physical Review Letters, 114 (5). Art. No. 056801. ISSN 0031-9007. http://resolver.caltech.edu/CaltechAUTHORS:20140401-114739350

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Abstract

We investigate the possibility of realizing a disorder-induced topological Floquet spectrum in two-dimensional periodically-driven systems. Such a state would be a dynamical realization of the topological Anderson insulator. We establish that a disorder-induced trivial-to-topological transition indeed occurs, and characterize it by computing the disorder averaged Bott index, suitably defined for the time-dependent system. The presence of edge states in the topological state is confirmed by exact numerical time-evolution of wavepackets on the edge of the system. We consider the optimal driving regime for experimentally observing the Floquet-Anderson topological insulator, and discuss its possible realization in photonic lattices.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1103/PhysRevLett.114.056801 DOIArticle
http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.114.056801PublisherArticle
http://arxiv.org/abs/1403.0592arXivArticle
Additional Information:© 2015 American Physical Society. Received 19 March 2014; published 4 February 2015. We thank Kun W. Kim, Shu-Ping Lee, Victor Chua and S. M. Bhattacharjee for illuminating discussions. This work was funded by the Packard Foundation, and by the Institute for Quantum Information and Matter, an NSF Physics Frontiers Center with support of the Gordon and Betty Moore Foundation. NL acknowledges financial support by the Bi-National Science Foundation, and by ICore: the Israeli Excellence Center ”Circle of Light”.
Group:IQIM, Institute for Quantum Information and Matter
Funders:
Funding AgencyGrant Number
David and Lucile Packard FoundationUNSPECIFIED
Institute for Quantum Information and Matter (IQIM)UNSPECIFIED
NSF Physics Frontiers CenterUNSPECIFIED
Gordon and Betty Moore FoundationUNSPECIFIED
Binational Science Foundation (USA-Israel)UNSPECIFIED
ICore Israeli Excellence CenterUNSPECIFIED
Classification Code:PACS: 81.05.ue, 03.65.Vf, 73.43.Nq, 71.23.An
Record Number:CaltechAUTHORS:20140401-114739350
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20140401-114739350
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:44577
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:01 Apr 2014 20:12
Last Modified:10 Mar 2015 19:23

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