Abstract
We have studied spectral diffusion of the photoluminescence of a single CdSe quantum dot inserted in a ZnSe nanowire. We have measured the characteristic diffusion time as a function of pumping power and temperature using a recently developed technique [G. Sallen et al., Nat. Photon. 4, 696 (2010)] that offers subnanosecond resolution. These data are consistent with a model where only a single carrier wanders around in traps located in the vicinity of the quantum dot.
- Received 4 May 2011
DOI:https://doi.org/10.1103/PhysRevB.84.041405
©2011 American Physical Society
Viewpoint
Quantum dots shine unsteadily
Published 18 July 2011
Rapid frequency variations in the photons generated by a quantum dot pose difficulties for practical applications of new quantum dot materials.
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