Abstract
Efficient coupling between a localized quantum emitter and a well defined optical channel represents a powerful route to realize single-photon sources and spin-photon interfaces. The tailored fiber-like photonic nanowire embedding a single quantum dot has recently demonstrated an appealing potential. However, the device requires a delicate, sharp needle-like taper with performance sensitive to minute geometrical details. To overcome this limitation we demonstrate the photonic trumpet, exploiting an opposite tapering strategy. The trumpet features a strongly Gaussian far-field emission. A first implementation of this strategy has lead to an ultra-bright single-photon source with a first-lens external efficiency of 0.75 ± 0.1 and a predicted coupling to a Gaussian beam of 0.61 ± 0.08.
| Original language | English |
|---|---|
| Article number | 87490W |
| Journal | Proceedings of SPIE - The International Society for Optical Engineering |
| Volume | 8749 |
| ISSN | 0277-786X |
| DOIs | |
| Publication status | Published - 2013 |
| Event | SPIE Defense, Security and Sensing 2013 - Baltimore, United States Duration: 29 Apr 2013 → 3 May 2013 |
Conference
| Conference | SPIE Defense, Security and Sensing 2013 |
|---|---|
| Country/Territory | United States |
| City | Baltimore |
| Period | 29/04/2013 → 03/05/2013 |
Keywords
- Single-photon source
- Photonic nanowire
- Inverted conical taper
- Photonic trumpet
- Spin-photon interface
- Efficiency
- Gaussian beam
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