Bunching and antibunching in the fluorescence of semiconductor nanocrystals
- 1 December 2001
- journal article
- Published by Optica Publishing Group in Optics Letters
- Vol. 26 (23) , 1891-1893
- https://doi.org/10.1364/ol.26.001891
Abstract
The fluorescence of single-colloidal CdSe quantum dots is investigated at room temperature by means of the autocorrelation function over a time scale of almost 12 orders of magnitude. Over a short time scale, the autocorrelation function shows complete antibunching, indicating single-photon emission and atomiclike behavior. Over longer time scales (up to tens of seconds), we measure a bunching effect that is due to fluorescence intermittency and that cannot be described by fluctuations between two states with constant rates. The autocorrelation function also exhibits nonstationary behavior related to power-law distributions of on and off times.Keywords
This publication has 15 references indexed in Scilit:
- Triggered Single Photons from a Quantum DotPhysical Review Letters, 2001
- A Quantum Dot Single-Photon Turnstile DeviceScience, 2000
- Single photons on demand from a single molecule at room temperatureNature, 2000
- Photon antibunching in the fluorescence of individual color centers in diamondOptics Letters, 2000
- Quantum correlation among photons from a single quantum dot at room temperatureNature, 2000
- Stable Solid-State Source of Single PhotonsPhysical Review Letters, 2000
- Nonclassical Photon Statistics in Single-Molecule Fluorescence at Room TemperaturePhysical Review Letters, 2000
- Photon antibunching in the fluorescence of a single dye molecule trapped in a solidPhysical Review Letters, 1992
- Nonclassical radiation of a single stored ionPhysical Review Letters, 1987
- Photon Antibunching in Resonance FluorescencePhysical Review Letters, 1977