Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2006-03-31
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
3 pages, 4 figures, submitted APL
Scientific paper
10.1063/1.2378403
We have studied the emission properties of individual InAs quantum dots (QDs) grown in an InGaAsP matrix on InP(100) by metal-organic vapor-phase epitaxy. Low-temperature microphotoluminescence spectroscopy shows emission from single QDs around 1550 nm with characteristic exciton-biexciton behavior, and a biexciton antibinding energy of more than 2 meV. Temperature-dependent measurements reveal negligible optical-phonon induced broadening of the exciton line up to 50 K, and emission from the exciton state clearly persists above 70 K. Furthermore, we find no measurable polarized fine structure splitting of the exciton state within the experimental precision. These results are encouraging for the development of a controllable photon source for fiber-based quantum information and cryptography systems.
Anantathanasarn S.
Cade N. I.
Gotoh Hideki
Kamada Hiroyuki
Nakano Hiroyuki
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