|Title||Effects of photo-neutralization on the emission properties of quantum dots|
|Publication Type||Journal Article|
|Year of Publication||2016|
|Authors||T. Huber, A. Predojević, G. S. Solomon, and G. Weihs|
|Keywords||-wire and -dot devices, and noise, Fluctuations, Quantum optics, Quantum-well, relaxations|
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.