| Autor: |
Shafi, K. Muhammed, Nayak, Kali P., Miyanaga, Akiharu, Hakuta, Kohzo |
| Rok vydání: |
2020 |
| Předmět: |
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| Zdroj: |
Appl. Phys. B 126, 58 (2020) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1007/s00340-020-7407-5 |
| Popis: |
We demonstrate a fiber in-line single photon source based on a hybrid system of colloidal single quantum dots deposited on an optical nanofiber and cooled down to cryogenic temperature (3.7 K). We show that a charged state (trion) of the single quantum dot exhibits a photo-stable emission of single photons with high quantum efficiency, narrow linewidth (3 meV FWHM) and fast decay time ($10.0\pm0.5$ ns). The single photons are efficiently coupled to the guided modes of the nanofiber and eventually to a single mode optical fiber. The brightness (efficiency) of the single photon source is estimated to be $16\pm2\%$ with a maximum photon count rate of $1.6\pm0.2$ MHz and a high single photon purity ($g^2(0)=0.11\pm0.02$). The device can be easily integrated to the fiber networks paving the way for potential applications in quantum networks. |
| Databáze: |
arXiv |
| Externí odkaz: |
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