Berlin 2005 – wissenschaftliches Programm
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HL: Halbleiterphysik
HL 4: Quantenpunkte und -dr
ähte: Optische Eigenschaften I
HL 4.3: Vortrag
Freitag, 4. März 2005, 11:15–11:30, TU P-N201
Carrier dynamics in single quantum dots and implications on single-photon emission — •Thomas Aichele1, Val Zwiller2, and Oliver Benson1 — 1Humboldt-Universität zu Berlin — 2ETH Zürich, Schweiz
Sources for the generation of single photon light states within a defined time interval and with a high extraction efficiency are important devices for a large range of experiments in quantum optics and applications in optical quantum technology [1,2]. In our experiment we study the photoluminescence (PL) of single InP quantum dots [3]. Measurements of the intensity correlation demonstrate the non-classical nature of the PL from a single quantum dot. Moreover, deviations from the simple form of a pure anti-bunching dip reveal peculiar features of the carrier dynamics in quantum dots. We studied bunching and anti-bunching as a function of optical excitation parameters. The origin of the observed effects and their implications on quantum information processing applications are discussed with the help of Monte Carlo simulations.
[1] T.Aichele, V.Zwiller and O.Benson, New J. Phys 6, 90 (2004)
[2] T.Aichele, G.Reinaudi and O.Benson, to appear in PRB (2004)
[3] V.Zwiller, T.Aichele, W.Seifert, J.Persson and O.Benson, APL 82,1509 (2003)