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

Ramsay, AJ; Boyle, SJ; Kolodka, RS; Oliveira, JBB; Skiba-Szymanska, J; Fox, AM; Skolnick, MS; ... Hopkinson, M; + view all (2008) Fast optical preparation, control, and readout of a single quantum dot spin. Physical Review Letters , 100 (19) , Article 197401. 10.1103/PhysRevLett.100.197401. Green open access

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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. © 2008 The American Physical Society.

Type: Article
Title: Fast optical preparation, control, and readout of a single quantum dot spin
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevLett.100.197401
Publisher version: http://dx.doi.org/10.1103/PhysRevLett.100.197401
Additional information: © 2008 The American Physical Society
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/45961
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