Fast optical preparation, control, and readout of a single quantum dot spin
Data
2008-05-16
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Amer Physical Soc
Resumo
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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Physical Review Letters. College Pk: Amer Physical Soc, v. 100, n. 19, p. 4, 2008.