Resonantly excited emissions from a GaAs quantum dot and an exciton dipole moment

K. Kuroda; T. Kuroda; K. Sakoda; G. Kido; N. Koguchi

doi:10.1117/12.763016

22 February 2008 Resonantly excited emissions from a GaAs quantum dot and an exciton dipole moment

K. Kuroda, T. Kuroda, K. Sakoda, G. Kido, N. Koguchi

Proceedings Volume 6889, Physics and Simulation of Optoelectronic Devices XVI; 68890S (2008) https://doi.org/10.1117/12.763016
Event: Integrated Optoelectronic Devices 2008, 2008, San Jose, California, United States

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.

Citation Download Citation

K. Kuroda, T. Kuroda, K. Sakoda, G. Kido, and N. Koguchi "Resonantly excited emissions from a GaAs quantum dot and an exciton dipole moment", Proc. SPIE 6889, Physics and Simulation of Optoelectronic Devices XVI, 68890S (22 February 2008); https://doi.org/10.1117/12.763016

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