Journal article
Suppression of background emission for efficient single-photon generation in micropillar cavities
We optimize the efficiency of a quantum-dot-based micropillar single-photon source by minimizing the spontaneous emission into unwanted background modes. We perform a numerical investigation of the background emission, where we identify a semi-periodic enhancement with the diameter. At these peaks of the background emission, the efficiency is reduced by ∼20%, and we show how this reduction can be avoided simply by choosing a diameter away from the peaks.
Finally, we analyze the discrepancy between the Purcell factor estimated from experimental lifetime measurements and the true Purcell factor.
Language: | English |
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Publisher: | AIP Publishing LLC |
Year: | 2021 |
Pages: | 114003 |
ISSN: | 10773118 and 00036951 |
Types: | Journal article |
DOI: | 10.1063/5.0044018 |
ORCIDs: | Vannucci, Luca , Jacobsen, Martin Arentoft , Gregersen, Niels , 0000-0003-1325-3261 and 0000-0002-8227-9177 |