Universal anyons at the irradiated surface of topological insulator
Anyons have recently received great attention due to their promising application in topological quantum computation. The best validated system that enjoys the anyonic excitations are the Laughlin states. The quasiparticles in Laughlin states are neither fermions nor bosons but possess the discrete... Full description
Journal Title:  Sci Rep 2016, Vol.6(1), pp.2007520075 
Main Author:  Wang, Rui 
Other Authors:  Chen, Wei , Wang, Baigeng , Xing, D. Y. 
Format:  Electronic Article 
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English 
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ID:  ISSN: 20452322 ; DOI: 10.1038/srep20075 
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title:  Universal anyons at the irradiated surface of topological insulator 
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ispartof:  Sci Rep, 2016, Vol.6(1), pp.2007520075 
description:  Anyons have recently received great attention due to their promising application in topological quantum computation. The best validated system that enjoys the anyonic excitations are the Laughlin states. The quasiparticles in Laughlin states are neither fermions nor bosons but possess the discrete statistical angle θ = π/m, with m being an integer. Here we report a possible realization of the universal Abelian anyons, whose statistical angle can be tuned continuously by external parameters and can take any arbitrary values interpolating θ = 0 and θ = π. The proposed setup is the surface state of a three dimensional topological insulator driven by an amplitudemodulated circularlypolarized light. It is found that the external field leads to a particular Floquet phase, which is a twospatialdimensional analogy of the Weyl semimetal phase in the Floquet first Brillouin zone. The chiral anomaly of this phase results in a U(1) ChernSimons gauge theory with a tunable Floquet Chern number. Owing to this underlying gauge field theory, the irradiated surface of topological insulator constitutes a promising platform for the observation of the universal anyons. 
language:  eng 
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identifier:  ISSN: 20452322 ; DOI: 10.1038/srep20075 
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