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Journal of Nanophotonics • Open Access

Single-photon emitter using excitation energy transfer between quantum dots
Author(s): Tadashi Kawazoe; Shunsuke Tanaka; Motoichi Ohtsu

Paper Abstract

We demonstrated a high-quality single-photon emitter based on excitation energy transfer between two different-sized CuCl quantum dots (QDs). It is operated under triple blockade mechanisms. The mechanisms are tuning the incident light to the smaller QD and using an electric dipole forbidden excitation energy level in the larger QD, using the optical near-field interaction to transfer energy from the smaller QD to the electric dipole forbidden level of the larger QD, and using a single exciton emission level in the larger QD. These mechanisms are supported by the large binding energy of the exciton molecule. A 99.3% plausibility of single-photon emission was confirmed with 99.98% accuracy based on a photon correlation experiment with 80-MHz repetition frequency using an optical fiber probe.

Paper Details

Date Published: 1 October 2008
PDF: 6 pages
J. Nanophoton. 2(1) 029502 doi: 10.1117/1.3026554
Published in: Journal of Nanophotonics Volume 2, Issue 1
Show Author Affiliations
Tadashi Kawazoe, The Univ. of Tokyo (Japan)
Shunsuke Tanaka, The Univ. of Tokyo (Japan)
Motoichi Ohtsu, Japan Science and Technology Agency (Japan)


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