Abstract
We use photon correlation measurements to study blinking in single, epitaxially grown self-assembled InAs quantum dots situated in circular Bragg grating and microdisk cavities. The normalized second-order correlation function is studied across 11 orders of magnitude in time, and shows signatures of blinking over time scales ranging from tens of nanoseconds to tens of milliseconds. The data is fit to a multilevel system rate equation model that includes multiple nonradiating (dark) states, from which radiative quantum yields significantly less than 1 are obtained. This behavior is observed even in situations for which a direct histogramming analysis of the emission time-trace data produces inconclusive results.
- Received 3 June 2013
- Revised 3 April 2014
- Publisher error corrected 17 April 2014
DOI:https://doi.org/10.1103/PhysRevB.89.161303
©2014 American Physical Society
Corrections
17 April 2014