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Proceedings Paper

Resonantly excited emissions from a GaAs quantum dot and an exciton dipole moment
Author(s): K. Kuroda; T. Kuroda; K. Sakoda; G. Kido; N. Koguchi
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Paper Abstract

We report on observation of spontaneous emissions from a single quantum dot after resonant excitation. To capture weak emissions from a single quantum dot, reflection of an excitation laser was reduced by applying obliquely incident geometry and crossed polarization configuration. In addition, collected emissions were temporally resolved to be separated from residual reflection. These allowed us to realize a simple manipulation and read out of an exciton qubit. We observed an exciton Rabi oscillation in excitation amplitude dependence of the emission intensity. We determined an exciton dipole moment from the Rabi oscillation and from the emission decay time, independently. Comparison between the two values shows reasonable agreement.

Paper Details

Date Published: 22 February 2008
PDF: 8 pages
Proc. SPIE 6889, Physics and Simulation of Optoelectronic Devices XVI, 68890S (22 February 2008); doi: 10.1117/12.763016
Show Author Affiliations
K. Kuroda, National Institute for Materials Science (Japan)
T. Kuroda, National Institute for Materials Science (Japan)
PRESTO, Japan Science and Technology Agency (Japan)
K. Sakoda, National Institute for Materials Science (Japan)
Univ. of Tsukuba (Japan)
G. Kido, National Institute for Materials Science (Japan)
N. Koguchi, National Institute for Materials Science (Japan)


Published in SPIE Proceedings Vol. 6889:
Physics and Simulation of Optoelectronic Devices XVI
Marek Osinski; Fritz Henneberger; Keiichi Edamatsu, Editor(s)

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