Design study for an efficient semiconductor quantum light source operating in the telecom C-band based on an electrically-driven circular Bragg grating
| Autor: | Andrea Barbiero, Jan Huwer, Joanna Skiba-Szymanska, Tina Müller, R. Mark Stevenson, Andrew J. Shields |
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| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Optics express. 30(7) |
| ISSN: | 1094-4087 |
| Popis: | The development of efficient sources of single photons and entangled photon pairs emitting in the low-loss wavelength region around 1550 nm is crucial for long-distance quantum communication. Moreover, direct fiber coupling and electrical carrier injection are highly desirable for deployment in compact and user-friendly systems integrated with the existing fiber infrastructure. Here we present a detailed design study of circular Bragg gratings etched in InP slabs and operating in the telecom C-band. These devices enable the simultaneous enhancement of the X and XX spectral lines, with collection efficiency in NA=0.65 close to 90% for the wavelength range 1520-1580 nm and Purcell factor up to 15. We also investigate the coupling into single mode fiber, which exceeds 70% in UHNA4. Finally, we propose a modified device design directly compatible with electrical carrier injection, reporting Purcell factors up to 20 and collection efficiency in NA=0.65 close to 70% for the whole telecom C-band. Comment: 6 pages, 3 figures |
| Databáze: | OpenAIRE |
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