%L discovery45961
%T Fast optical preparation, control, and readout of a single quantum dot spin
%V 100
%N 19
%J Physical Review Letters
%A AJ Ramsay
%A SJ Boyle
%A RS Kolodka
%A JBB Oliveira
%A J Skiba-Szymanska
%A AM Fox
%A MS Skolnick
%A HY Liu
%A M Hopkinson
%X 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.
%D 2008
%O © 2008 The American Physical Society