Document Detail


Single-Shot Correlations and Two-Qubit Gate of Solid-State Spins.
MedLine Citation:
PMID:  21817015     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Measurement of coupled quantum systems plays a central role in quantum information processing. We have realized independent single-shot read-out of two electron spins in a double quantum dot. The read-out method is all-electrical, cross-talk between the two measurements is negligible, and read-out fidelities are about 86% on average. This allows us to directly probe the anticorrelations between two spins prepared in a singlet state, and to demonstrate the operation of the two-qubit exchange gate on a complete set of basis states. The results provide a possible route to the realization and efficient characterization of multiqubit quantum circuits based on single quantum dot spins.
Authors:
K C Nowack; M Shafiei; M Laforest; G E D K Prawiroatmodjo; L R Schreiber; C Reichl; W Wegscheider; L M K Vandersypen
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-8-4
Journal Detail:
Title:  Science (New York, N.Y.)     Volume:  -     ISSN:  1095-9203     ISO Abbreviation:  -     Publication Date:  2011 Aug 
Date Detail:
Created Date:  2011-8-5     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0404511     Medline TA:  Science     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Kavli Institute of Nanoscience, Delft University of Technology, P. O. Box 5046, 2600 GA Delft, Netherlands.
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