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Paper Abstract and Keywords
Presentation 2019-05-21 14:30
Frequency-domain Mach-Zehnder interferometer
Toshiki Kobayashi, Daisuke Yamazaki, Kenichiro Matsuki, Rikizo Ikuta (Osaka Univ.), Shigehito Miki (NICT), Taro Yamashita (Nagoya Univ.), Hirotaka Terai (NICT), Takashi Yamamoto (Osaka Univ.), Masato Koashi (Univ. of Tokyo), Nobuyuki Imoto (Osaka Univ.)
Abstract (in Japanese) (See Japanese page) 
(in English) We demonstrate a first-order interference between coherent light at 1580~nm and 795~nm by using a frequency-domain Mach-Zehnder interferometer~(MZI) composed of two partial frequency converters as a frequency-domain BS. The BSs are realised by a second-order nonlinear optical effect in a periodically-poled lithium niobate waveguide with a strong pump light. The observed visibility is over 0.99 at 50% conversion efficiencies of the BSs. Toward photonic quantum information processing, sufficiently small background noise photon rate is necessary. From measurement results with a superconducting single photon detector~(SSPD), we discuss the feasibility of the frequency-domain MZI in a quantum regime. Our estimation shows that the single photon interference with the visibility above 0.9 is feasible with practical settings.
Keyword (in Japanese) (See Japanese page) 
(in English) Wavelength converter / Quantum optics / Nonlinear optics / PPLN / / / /  
Reference Info. IEICE Tech. Rep.
Paper #  
Date of Issue  
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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Conference Information
Committee QIT  
Conference Date 2019-05-20 - 2019-05-21 
Place (in Japanese) (See Japanese page) 
Place (in English) Kyushu University, Chikushi Campus 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Quantum Information 
Paper Information
Registration To QIT 
Conference Code 2019-05-QIT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Frequency-domain Mach-Zehnder interferometer 
Sub Title (in English)  
Keyword(1) Wavelength converter  
Keyword(2) Quantum optics  
Keyword(3) Nonlinear optics  
Keyword(4) PPLN  
1st Author's Name Toshiki Kobayashi  
1st Author's Affiliation Osaka University (Osaka Univ.)
2nd Author's Name Daisuke Yamazaki  
2nd Author's Affiliation Osaka University (Osaka Univ.)
3rd Author's Name Kenichiro Matsuki  
3rd Author's Affiliation Osaka University (Osaka Univ.)
4th Author's Name Rikizo Ikuta  
4th Author's Affiliation Osaka University (Osaka Univ.)
5th Author's Name Shigehito Miki  
5th Author's Affiliation National Institute of Information and Communications Technology (NICT)
6th Author's Name Taro Yamashita  
6th Author's Affiliation Nagoya University (Nagoya Univ.)
7th Author's Name Hirotaka Terai  
7th Author's Affiliation National Institute of Information and Communications Technology (NICT)
8th Author's Name Takashi Yamamoto  
8th Author's Affiliation Osaka University (Osaka Univ.)
9th Author's Name Masato Koashi  
9th Author's Affiliation University of Tokyo (Univ. of Tokyo)
10th Author's Name Nobuyuki Imoto  
10th Author's Affiliation Osaka University (Osaka Univ.)
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Date Time 2019-05-21 14:30:00 
Presentation Time 20 
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