2018年4月1日
Ultrabright narrow-band telecom two-photon source for long-distance quantum communication
Applied Physics Express
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- 巻
- 11
- 号
- 4
- 開始ページ
- 04801_1-042801_5
- 終了ページ
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.7567/APEX.11.042801
- 出版者・発行元
- Japan Society of Applied Physics
We demonstrate an ultrabright narrow-band two-photon source at the 1.5 μm telecom wavelength for long-distance quantum communication. By utilizing a bow-tie cavity, we obtain a cavity enhancement factor of 4.06 × 104. Our measurement of the second-order correlation function G(2)(t) reveals that the linewidth of 2.4 MHz has been hitherto unachieved in the 1.5 μm telecom band. This two-photon source is useful for obtaining a high absorption probability close to unity by quantum memories set inside quantum repeater nodes. Furthermore, to the best of our knowledge, the observed spectral brightness of 3.94 × 105 pairs/(s&
MHz&
mW) is also the highest reported over all wavelengths.
MHz&
mW) is also the highest reported over all wavelengths.
- ID情報
-
- DOI : 10.7567/APEX.11.042801
- ISSN : 1882-0786
- ISSN : 1882-0778
- SCOPUS ID : 85044937623