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Coherent manipulation of coupled electron spins in semiconductor quantum dots.

Abstract:

We demonstrated coherent control of a quantum two-level system based on two-electron spin states in a double quantum dot, allowing state preparation, coherent manipulation, and projective readout. These techniques are based on rapid electrical control of the exchange interaction. Separating and later recombining a singlet spin state provided a measurement of the spin dephasing time, T2*, of approximately 10 nanoseconds, limited by hyperfine interactions with the gallium arsenide host nuclei. ...

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Publication status:
Published

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Publisher copy:
10.1126/science.1116955

Authors


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Institution:
University of Oxford
Division:
MPLS
Department:
Materials
Role:
Author
Journal:
Science (New York, N.Y.) More from this journal
Volume:
309
Issue:
5744
Pages:
2180-2184
Publication date:
2005-09-01
DOI:
EISSN:
1095-9203
ISSN:
0036-8075
Language:
English
Pubs id:
pubs:414497
UUID:
uuid:6a1c0f53-337f-4f64-9c4a-d85ceaee480c
Local pid:
pubs:414497
Source identifiers:
414497
Deposit date:
2013-11-16

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