Universal phase shift and nonexponential decay of driven single-spin oscillations

Koppens, F. H. L. and Klauser, D. and Coish, W. A. and Nowack, K. C. and Kouwenhoven, L. P. and Loss, D. and Vandersypen, L. M. K.. (2007) Universal phase shift and nonexponential decay of driven single-spin oscillations. Physical review letters, Vol. 99, H. 10 , 106803, 4 S..

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Official URL: http://edoc.unibas.ch/dok/A5254621

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We study, both theoretically and experimentally, driven Rabi oscillations of a single electron spin coupled to a nuclear-spin bath. Because of the long correlation time of the bath, two unusual features are observed in the oscillations. The decay follows a power law, and the oscillations are shifted in phase by a universal value of similar to pi/4. These properties are well understood from a theoretical expression that we derive here in the static limit for the nuclear bath. This improved understanding of the coupled electron-nuclear system is important for future experiments using the electron spin as a qubit.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Theoretische Physik Mesoscopics (Loss)
UniBasel Contributors:Loss, Daniel
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:American Physical Society
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:22 Mar 2012 14:26
Deposited On:22 Mar 2012 13:53

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