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Title: Network models of photonic Floquet topological insulators
Authors: Pasek, Michael
Chong, Y. D.
Keywords: DRNTU::Science::Physics
Issue Date: 2014
Source: Pasek, M., & Chong, Y. D. (2014). Network models of photonic Floquet topological insulators. Physical Review B, 89(7).
Series/Report no.: Physical review B
Abstract: A recently proposed class of photonic topological insulators is shown to map onto Chalker-Coddington-type networks, which were originally formulated to study disordered quantum Hall systems. Such network models are equivalent to the Floquet states of periodically driven lattices. We show that they can exhibit topologically protected edge states even if all bands have zero Chern number, which is a characteristic property of Floquet band structures. These edge states can be counted by an adiabatic pumping invariant based on the winding number of the coefficient of reflection from one edge of the network.
ISSN: 1098-0121
DOI: 10.1103/PhysRevB.89.075113
Rights: © 2014 American Physical Society. This paper was published in Physical Review B and is made available as an electronic reprint (preprint) with permission of American Physical Society. The paper can be found at the following official DOI:  One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

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