Entanglement between distant quantum memories via quantum frequency conversion
| Project/Area Number |
16K17772
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Atomic/Molecular/Quantum electronics
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| Research Institution | Osaka University |
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Principal Investigator |
Ikuta Rikizo 大阪大学, 基礎工学研究科, 助教 (90626475)
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| Project Period (FY) |
2016-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2016: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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| Keywords | 量子エレクトロニクス / 量子情報 / 量子通信 / 波長変換 / エンタングルメント / 量子中継 / 量子メモリ / 冷却原子 / 冷却原子集団 / 単一光子 |
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| Outline of Final Research Achievements |
We studied about establishment of entanglement between distant quantum memories through an optical fiber-based quantum communication. For the effective fiber-based quantum communication with quantum repeater algorithm, entanglement between a quantum memory and a telecom photon is vital. We developed a polarization-insensitive quantum frequency converter. By using the device, we converted a wavelength of a visible photon entangled with a rubidium atomic cloud as a quantum memory to the telecom wavelength. As a result, we achieved an entanglement between the atoms and the telecom photon. We performed other experiments for long distance quantum communication: demonstration of the two photon interference without timing synchronization of the photons, and faithful entanglement distribution of polarized photons via noisy optical fibers.
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Report
(3 results)
Research Products
(19 results)
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[Journal Article] Polarization insensitive frequency conversion for an atom-photon entanglement distribution via a telecom network2018
Author(s)
Rikizo Ikuta, Toshiki Kobayashi, Tetsuo Kawakami, Shigehito Miki, Masahiro Yabuno, Taro Yamashita, Hirotaka Terai, Masato Koashi, Tetsuya Mukai, Takashi Yamamoto, Nobuyuki Imoto
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Journal Title
Nature Communications
Volume: -
Related Report
Peer Reviewed / Open Access
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[Journal Article] High visibility Hong-Ou-Mandel interference via a time-resolved coincidence measurement2017
Author(s)
Yoshiaki Tsujimoto, Yukihiro Sugiura, Motoki Tanaka, Rikizo Ikuta, Shigehito Miki, Taro Yamashita, Hirotaka Terai, Mikio Fujiwara, Takashi Yamamoto, Masato Koashi, Masahide Sasaki, Nobuyuki Imoto
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Journal Title
Optics Express
Volume: 25
Issue: 11
Pages: 12069-12080
DOI
Related Report
Peer Reviewed / Open Access
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[Presentation] Wavelength Conversion of non-classical light from rubidium atoms to the telecom band2016
Author(s)
R. Ikuta, T. Kobayashi, K. Matsuki, S. Miki, T. Yamashita, H. Terai, T. Yamamoto, M. Koashi, T. Mukai, N. Imoto
Organizer
13th International Conference on Quantum Communication, Measurement, and Computing (QCMC 2016)
Place of Presentation
ケントリッジ（シンガポール）
Year and Date
2016-07-05
Related Report
Int'l Joint Research
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[Presentation] High fidelity entanglement swapping via a time-resolved coincidence measurement2016
Author(s)
Yoshiaki Tsujimoto, Motoki Tanaka, Yukihiro Sugiura, Rikizo Ikuta, Shigehito Miki, Taro Yamashita, Hirotaka Terai, Takashi Yamamoto, Masato Koashi and Nobuyuki Imoto
Organizer
13th International Conference on Quantum Communication, Measurement, and Computing (QCMC 2016)
Place of Presentation
ケントリッジ（シンガポール）
Year and Date
2016-07-05
Related Report
Int'l Joint Research
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