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Optically tunable nuclear magnetic resonance in a single quantum dot

Makhonin, M.N., Chekhovich, E.A., Senellart, P., Lemaitre, A., Skolnick, M.S. and Tartakovskii, A.I. (2010) Optically tunable nuclear magnetic resonance in a single quantum dot. Physical Review B (PRB), 82 (16). Art. no.161309 . ISSN 1098-0121

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We report optically detected nuclear magnetic resonance (ODNMR) measurements on small ensembles of nuclear spins in single GaAs quantum dots. Using ODNMR we make direct measurements of the inhomogeneous Knight field from a photoexcited electron which acts on the nuclei in the dot. The resulting shifts of the NMR peak can be optically controlled by varying the electron occupancy and its spin orientation, and lead to strongly asymmetric line shapes at high optical excitation. The all-optical control of the NMR line shape will enable position-selective control of small groups of nuclear spins inside a dot.

Item Type: Article
Copyright, Publisher and Additional Information: © 2010 American Physical Society. This is an author produced version of a paper subsequently published in Physical Review B. Uploaded in accordance with the publisher's self-archiving policy.
Keywords: Spin; NMR; GAAS; Spectroscopy
Institution: The University of Sheffield
Academic Units: The University of Sheffield > Faculty of Science (Sheffield) > Department of Physics and Astronomy (Sheffield)
Depositing User: Miss Anthea Tucker
Date Deposited: 17 Nov 2010 09:36
Last Modified: 08 Feb 2013 17:29
Published Version: http://dx.doi.org/10.1103/PhysRevB.82.161309
Status: Published
Publisher: American Physical Society
Refereed: Yes
Identification Number: 10.1103/PhysRevB.82.161309
URI: http://eprints.whiterose.ac.uk/id/eprint/42649

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