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Efficient single-photon extraction from quantum-dots embedded in GaAs micro-pyramids
| Content Provider | Semantic Scholar |
|---|---|
| Author | Rülke, D. Schaadt, Daniel M. Kalt, Heinz Hetterich, Michael |
| Copyright Year | 2012 |
| Abstract | We demonstrate an easy method to fabricate efficient single-photon sources based on In(Ga)As quantum-dots embedded in reversed GaAs micro-pyramids. It relies on a single wet-chemical etching step utilizing an AlAs sacrificial layer. Due to the pyramidal shape of the cavities, we have been able to separate a small number of quantum-dots from the self-assembled ensemble and improve the extraction efficiency for single photons. The latter is predicted by finite difference time domain and finite elements method simulations to be about 80%–90% over a broad spectral range of 40 nm. Single-photon emission has been proven experimentally by means of auto-correlation measurements. |
| Starting Page | 251101 |
| Ending Page | 251101 |
| Page Count | 1 |
| File Format | PDF HTM / HTML |
| DOI | 10.1063/1.4729482 |
| Volume Number | 100 |
| Alternate Webpage(s) | http://www.daniel-schaadt.de/publikationen/Ruelke_APL_100_251101_2012.pdf |
| Alternate Webpage(s) | https://doi.org/10.1063/1.4729482 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
