Document Detail


Exotic non-Abelian anyons from conventional fractional quantum Hall states.
MedLine Citation:
PMID:  23299898     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
Non-Abelian anyons-particles whose exchange noncommutatively transforms a system's quantum state-are widely sought for the exotic fundamental physics they harbour and for quantum computing applications. Numerous blueprints now exist for stabilizing the simplest type of non-Abelian anyon, defects binding Majorana modes, by interfacing widely available materials. Here we introduce a device fabricated from conventional fractional quantum Hall states and s-wave superconductors that supports exotic non-Abelian defects binding parafermionic zero modes, which generalize Majorana bound states. We show that these new modes can be experimentally identified (and distinguished from Majoranas) using Josephson measurements. We also provide a practical recipe for braiding parafermionic zero modes and show that they give rise to non-Abelian statistics. Interestingly, braiding in our setup produces a richer set of topologically protected operations when compared with the Majorana case. As a byproduct, we establish a new, experimentally realistic Majorana platform in weakly spin-orbit-coupled materials such as gallium arsenide.
Authors:
David J Clarke; Jason Alicea; Kirill Shtengel
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Nature communications     Volume:  4     ISSN:  2041-1723     ISO Abbreviation:  Nat Commun     Publication Date:  2013 Jan 
Date Detail:
Created Date:  2013-01-09     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101528555     Medline TA:  Nat Commun     Country:  England    
Other Details:
Languages:  eng     Pagination:  1348     Citation Subset:  IM    
Affiliation:
1] Department of Physics and Astronomy, University of California, Irvine, California 92697, USA [2] Department of Physics, California Institute of Technology, Pasadena, California 91125, USA.
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