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Letter

Nature Physics 3, 770–773 (1 November 2007) | doi:10.1038/nphys736

Optically detected coherent spin dynamics of a single electron in a quantum dot

M. H. Mikkelsen , J. Berezovsky , N. G. Stoltz , L. A. Coldren & D. D. Awschalom

The ability to sequentially initialize, manipulate and read out the state of a qubit, such as an electron spin in a quantum dot (QD), is a requirement in virtually any scheme for quantum information processing. However, previous optical measurements of a single electron spin have focused on time-averaged detection, with the spin being initialized and read out continuously.