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Takahiro Kashiwazaki

ntt inc

12H-index
100Paper Count
541Citation Count
Published Papers 17
Publication Date
ISRS-Supported Ultra-Wideband Transmission in S, C, L, U, and Extremely Long Wavelength Bands With PPLN-Based OPA/EDFA Hybrid Repeater
err2025-09-12
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errOAAI
errShimpei Shimizu; Kosuke Kimura; Akira Kawai; Masashi Abe; Shunya Konno; Takushi Kazama; Masanori Nakamura; Fukutaro Hamaoka; Koji Enbutsu; Takahiro Kashiwazaki; Munehiko Nagatani; Hitoshi Wakita; Yuta Shiratori; Hiroshi Yamazaki; Hiroyuki Takahashi; Takeshi Umeki; Takayuki Kobayashi; Yutaka Miyamoto
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Broadband generation and tomography of non-Gaussian states for ultra-fast optical quantum processors
err2024-11-01
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errOAAI
errKawasaki, Akito; Ide, Ryuhoh; Brunel, Hector; Suzuki, Takumi; Nehra, Rajveer; Nakashima, Katsuki; Kashiwazaki, Takahiro; Inoue, Asuka; Umeki, Takeshi; China, Fumihiro; Yabuno, Masahiro; Miki, Shigehito; Terai, Hirotaka; Yamashima, Taichi; Sakaguchi, Atsushi; Takase, Kan; Endo, Mamoru; Asavanant, Warit; Furusawa, Akira
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Hybrid Lumped Repeater Using PPLN-Based High-Gain Optical Parametric Phase Conjugators and EDFAs for C plus L-Band Transmission
err2024-05-15
err3
errOAAI
errShimizu, Shimpei; Kobayashi, Takayuki; Kazama, Takushi; Nakamura, Masanori; Enbutsu, Koji; Kashiwazaki, Takahiro; Abe, Masashi; Umeki, Takeshi; Miyamoto, Yutaka
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L- and U-Band WDM Transmission Over 6 THz Using PPLN-Based Optical Parametric Amplification and Wavelength-Band Conversion
err2024-03-01
err6
errOAAI
errShimizu, Shimpei; Kobayashi, Takayuki; Kawai, Akira; Kazama, Takushi; Nakamura, Masanori; Enbutsu, Koji; Kashiwazaki, Takahiro; Abe, Masashi; Umeki, Takeshi; Miyamoto, Yutaka; Kato, Tomoyuki; Tanaka, Yu; Hoshida, Takeshi
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Wideband Optical Parametric Amplification of 8.375-THz WDM Signal Using Cascaded PPLN Waveguides With Reused Pump Light
err2023-12-15
err3
errOAAI
errShimizu, Shimpei; Kobayashi, Takayuki; Kazama, Takushi; Umeki, Takeshi; Nakamura, Masanori; Enbutsu, Koji; Kashiwazaki, Takahiro; Hamaoka, Fukutaro; Nagatani, Munehiko; Yamazaki, Hiroshi; Watanabe, Kei; Miyamoto, Yutaka
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Over-8-dB squeezed light generation by a broadband waveguide optical parametric amplifier toward fault-tolerant ultra-fast quantum computers
err2023-06-06
err15
errOAAI
errKashiwazaki, Takahiro; Yamashima, Taichi; Enbutsu, Koji; Kazama, Takushi; Inoue, Asuka; Fukui, Kosuke; Endo, Mamoru; Umeki, Takeshi; Furusawa, Akira
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Low-loss polarization control in fiber systems for quantum computation
err2023-05-24
err1
errOAAI
errNakamura, Tomohiro; Nomura, Takefumi; Endo, Mamoru; He, R. U. O. F. A. N.; Kashiwazaki, Takahiro; Umeki, Takeshi; Yoshikawa, Jun-Ichi; Furusawa, Akira
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Non-Gaussian quantum state generation by multi-photon subtraction at the telecommunication wavelength
err2023-04-03
err12
errOAAI
errEndo, Mamoru; He, Ruofan; Sonoyama, Tatsuki; Takahashi, Kazuma; Kashiwazaki, Takahiro; Umeki, Takeshi; Takasu, Sachiko; Hattori, Kaori; Fukuda, Daiji; Fukui, Kosuke; Takase, Kan; Asavanant, Warit; Marek, Petr; Filip, Radim; Furusawa, Akira
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Toward a multi-core ultra-fast optical quantum processor: 43-GHz bandwidth real-time amplitude measurement of 5-dB squeezed light using modularized optical parametric amplifier with 5G technology
err2023-03-06
err24
errOAAI
errInoue, A.; Kashiwazaki, T.; Yamashima, T.; Takanashi, N.; Kazama, T.; Enbutsu, K.; Watanabe, K.; Umeki, T.; Endo, M.; Furusawa, A.
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Programmable time-multiplexed squeezed light source
err2023-01-09
err3
errOAAI
errTomoda, Hiroko; Yoshida, Takato; Kashiwazaki, Takahiro; Umeki, Takeshi; Enomoto, Yutaro; Takeda, Shuntaro
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Quantum arbitrary waveform generator
err2022-10-28
err8
errOAAI
errTakase, Kan; Kawasaki, Akito; Jeong, Byung Kyu; Kashiwazaki, Takahiro; Kazama, Takushi; Enbutsu, Koji; Watanabe, Kei; Umeki, Takeshi; Miki, Shigehito; Terai, Hirotaka; Yabuno, Masahiro; China, Fumihiro; Asavanant, Warit; Endo, Mamoru; Yoshikawa, Jun-Ichi; Furusawa, Akira
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PPLN-Based Optical Parametric Amplification for Wideband WDM Transmission
err2022-06-01
err33
errOAAI
errShimizu, Shimpei; Kobayashi, Takayuki; Kazama, Takushi; Umeki, Takeshi; Nakamura, Masanori; Enbutsu, Koji; Kashiwazaki, Takahiro; Kasahara, Ryoichi; Watanabe, Kei; Miyamoto, Yutaka
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Generation of Schrodinger cat states with Wigner negativity using a continuous-wave low-loss waveguide optical parametric amplifier
err2022-04-12
err20
errOAAI
errTakase, Kan; Kawasaki, Akito; Jeong, Byung Kyu; Endo, Mamoru; Kashiwazaki, Takahiro; Kazama, Takushi; Enbutsu, Koji; Watanabe, Kei; Umeki, Takeshi; Miki, Shigehito; Terai, Hirotaka; Yabuno, Masahiro; China, Fumihiro; Asavanant, Warit; Yoshikawa, Jun-ichi; Furusawa, Akira
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Fabrication of low-loss quasi-single-mode PPLN waveguide and its application to a modularized broadband high-level squeezer
err2021-12-22
err53
errOAAI
errKashiwazaki, Takahiro; Yamashima, Taichi; Takanashi, Naoto; Inoue, Asuka; Umeki, Takeshi; Furusawa, Akira
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Over-30-dB gain and 1-dB noise figure phase-sensitive amplification using a pump-combiner-integrated fiber I/O PPLN module
err2021-08-23
err29
errOAAI
errKazama, Takushi; Umeki, Takeshi; Shimizu, Shimpei; Kashiwazaki, Takahiro; Enbutsu, Koji; Kasahara, Ryoichi; Miyamoto, Yutaka; Watanabe, Kei
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Continuous and long-term stabilization of degenerate optical parametric oscillators for large-scale optical hybrid computers
err2020-12-07
err1
errOAAI
errIkuta, Takuya; Inagaki, Takahiro; Inaba, Kensuke; Honjo, Toshimori; Kazama, Takushi; Enbutsu, Koji; Kashiwazaki, Takahiro; Kasahara, Ryoichi; Umeki, Takeshi; Takesue, Hiroki
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Continuous-wave 6-dB-squeezed light with 2.5-THz-bandwidth from single-mode PPLN waveguide
err2020-03-30
err103
errOAAI
errKashiwazaki, Takahiro; Takanashi, Naoto; Yamashima, Taichi; Kazama, Takushi; Enbutsu, Koji; Kasahara, Ryoichi; Umeki, Takeshi; Furusawa, Akira
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