Fast optical preparation, control, and readout of a single quantum dot spin

Abstract

We propose and demonstrate the sequential initialization, optical control, and readout of a single spin trapped in a semiconductor quantum dot. Hole spin preparation is achieved through ionization of a resonantly excited electron-hole pair. Optical control is observed as a coherent Rabi rotation between the hole and charged-exciton states, which is conditional on the initial hole spin state. The spin-selective creation of the charged exciton provides a photocurrent readout of the hole spin state.

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Authors/Creators:	Ramsay, A.J. Boyle, S.J. Kolodka, R.S. Oliveira, J.B.B. Skiba-Szymanska, J. Liu, H.Y. Hopkinson, M. https://orcid.org/0000-0002-8097-6913 Fox, A.M. https://orcid.org/0000-0002-9025-2441 Skolnick, M.S. https://orcid.org/0000-0002-3972-8344
Copyright, Publisher and Additional Information:	© 2008 American Physical Society. This is an author produced version of a paper subsequently published in Physical Review Letters. Uploaded in accordance with the publisher's self-archiving policy.
Dates:	Published: 13 May 2008
Institution:	The University of Sheffield
Academic Units:	The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Electronic and Electrical Engineering (Sheffield) The University of Sheffield > Faculty of Science (Sheffield) > Department of Physics and Astronomy (Sheffield)
Depositing User:	Symplectic Sheffield
Date Deposited:	22 Sep 2017 14:05
Last Modified:	15 Nov 2017 05:47
Published Version:	https://doi.org/10.1103/PhysRevLett.100.197401
Status:	Published
Publisher:	American Physical Society
Refereed:	Yes
Identification Number:	https://doi.org/10.1103/PhysRevLett.100.197401

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Fast optical preparation, control, and readout of a single quantum dot spin

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