Ultrabright narrow‐band telecom two‐photon source for long‐distance quantum communication

• Niizeki, Kazuya

• Ikeda, Kohei

• Zheng, Mingyang

• Xie, Xiuping

• Okamura, Kotaro

• Takei, Nobuyuki

• Namekata, Naoto

• Inoue, Shuichiro

• Kosaka, Hideo

• Horikiri, Tomoyuki

書誌事項

タイトル別名

• Ultrabright narrow-band telecom two-photon source for long-distance quantum communication

抄録

We demonstrate an ultrabright narrow-band two-photon source at the 1.5μm 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)(τ) reveals that the linewidth of 2.4MHz has been hitherto unachieved in the 1.5μm 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.

収録刊行物

• Applied physics Express

  Applied physics Express 11 042801-1-042801-5, 2018-03-16

  Japan Society of Applied Physics through Institute of Pure and Applied Physics

キーワード

• General Physics and Astronomy
• General Engineering

詳細情報

• CRID: 1050001337800697728
• NII論文ID: 210000136160
• DOI: 10.7567/apex.11.042801
• ISSN: 18820786
• ISSN: 18820778
• Web Site: http://hdl.handle.net/10131/00011967
• Web Site: http://stacks.iop.org/1882-0786/11/i=4/a=042801/pdf
• Web Site: http://stacks.iop.org/1882-0786/11/i=4/a=042801?key=crossref.3678de2025fa1eb3b8c35554f65db7f1
• 本文言語コード: en
• 資料種別: journal article
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