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Transient coherent nonlinear spectroscopy of single quantum dots

Langbein, Wolfgang Werner and Patton, Brian 2007. Transient coherent nonlinear spectroscopy of single quantum dots. Journal of Physics: Condensed Matter 19 (29) , 295203. 10.1088/0953-8984/19/29/295203

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We review our recent advances in four-wave mixing spectroscopy of single semiconductor quantum dots using heterodyne spectral interferometry, a novel implementation of transient nonlinear spectroscopy allowing the study of the transient nonlinear polarization emitted from individual electronic transitions in both amplitude and phase. We present experiments on individual excitonic transitions localized in monolayer islands of GaAs/AlAs quantum wells and in self-assembled CdTe/ZnTe quantum dots. We investigate the formation of the photon echo from individual transitions, both with increasing number of transitions in the ensemble, and in the presence of temporal jitter of the energy of a single transition. The detection of amplitude and phase of the signal allows the implementation of a two-dimensional femtosecond spectroscopy, in which mutual coherent coupling of single quantum dot states can observed and quantified.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QC Physics
Publisher: IOP Publishing
ISSN: 0953-8984
Last Modified: 04 Jun 2017 05:09

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