Document Detail

Universal computation by multiparticle quantum walk.
MedLine Citation:
PMID:  23413349     Owner:  NLM     Status:  In-Process    
A quantum walk is a time-homogeneous quantum-mechanical process on a graph defined by analogy to classical random walk. The quantum walker is a particle that moves from a given vertex to adjacent vertices in quantum superposition. We consider a generalization to interacting systems with more than one walker, such as the Bose-Hubbard model and systems of fermions or distinguishable particles with nearest-neighbor interactions, and show that multiparticle quantum walk is capable of universal quantum computation. Our construction could, in principle, be used as an architecture for building a scalable quantum computer with no need for time-dependent control.
Andrew M Childs; David Gosset; Zak Webb
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Science (New York, N.Y.)     Volume:  339     ISSN:  1095-9203     ISO Abbreviation:  Science     Publication Date:  2013 Feb 
Date Detail:
Created Date:  2013-02-15     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0404511     Medline TA:  Science     Country:  United States    
Other Details:
Languages:  eng     Pagination:  791-4     Citation Subset:  IM    
Department of Combinatorics and Optimization, University of Waterloo, Waterloo, Ontario, Canada.
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