Fast optical preparation, control, and readout of a single quantum dot spin
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2008-05-13
Autores
Ramsay, A. J.
Boyle, S. J.
Kolodka, R. S.
Oliveira, J. B.B. [UNESP]
Skiba-Szymanska, J.
Liu, H. Y.
Hopkinson, M.
Fox, A. M.
Skolnick, M. S.
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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. © 2008 The American Physical Society.
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Physical Review Letters, v. 100, n. 19, 2008.