Size-Dependence of the Wavefunction of Self-Assembled Quantum Dots

Autor:	Johansen, J., Stobbe, S., Nikolaev, I. S., Lund-Hansen, T., Kristensen, P. T., Hvam, J. M., Vos, W. L., Lodahl, P.
Rok vydání:	2007
Předmět:	Condensed Matter - Other Condensed Matter
Zdroj:	Phys. Rev. B, vol 77, page 073303, 2008
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevB.77.073303
Popis:	The radiative and non-radiative decay rates of InAs quantum dots are measured by controlling the local density of optical states near an interface. From time-resolved measurements we extract the oscillator strength and the quantum efficiency and their dependence on emission energy. From our results and a theoretical model we determine the striking dependence of the overlap of the electron and hole wavefunctions on the quantum dot size. We conclude that the optical quality is best for large quantum dots, which is important in order to optimally tailor quantum dot emitters for, e.g., quantum electrodynamics experiments. Comment: 5 pages, 3 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/0707.1973 Zobrazit plný text záznamu View this record from Arxiv