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Effects of photo-neutralization on the emission properties of quantum dots

TitleEffects of photo-neutralization on the emission properties of quantum dots
Publication TypeJournal Article
Year of Publication2016
AuthorsT. Huber, A. Predojević, G. S. Solomon, and G. Weihs
JournalOpt. Express
Volume24
Pagination21794–21801
Date PublishedSep
Keywords-wire and -dot devices, and noise, Fluctuations, Quantum optics, Quantum-well, relaxations
Abstract

In this paper we investigate the coherence properties of a quantum dot used as photon pair source, under two-photon resonant excitation in combination with an additional photo-neutralization laser. The photo-neutralization increases the efficiency of the excitation process and thus, the brightness of the source, by a factor of approximately 1.5 for biexciton-exciton pairs. This enhancement does not degrade the relevant coherences in the system; neither the single photon coherence time, nor the coherence of the excitation process.

URLhttp://www.opticsexpress.org/abstract.cfm?URI=oe-24-19-21794
DOI10.1364/OE.24.021794