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

Tobias Huber, Ana Predojević, Glenn S. Solomon, Gregor Weihs
2016 Optics Express  
In this paper we investigate the coherence properties of a quantum dot 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
more » ... of the excitation process.
doi:10.1364/oe.24.021794 pmid:27661916 fatcat:esc76lwu4zhz7m6tte3ad6sdka