Takeshi Umeki

A coherent Ising machine for 2000-node optimization problems

Takahiro Inagaki, Yoshitaka Haribara, Koji Igarashi et al. · Science · 2016 · 759 citations

100,000-spin coherent Ising machine

Toshimori Honjo, Tomohiro Sonobe, Kensuke Inaba et al. · Science Advances · 2021 · 293 citations · Full text

Engineering, Advanced Computing, Computer Architecture +18

Highly Efficient Wavelength Converter Using Direct-Bonded PPZnLN Ridge Waveguide

Takeshi Umeki, O. Tadanaga, Masaki Asobe · IEEE Journal of Quantum Electronics · 2010 · 130 citations

Photonics, Optical Materials, Engineering +12

Fabrication of low-loss quasi-single-mode PPLN waveguide and its application to a modularized broadband high-level squeezer

Takahiro Kashiwazaki, Taichi Yamashima, Naoto Takanashi et al. · Applied Physics Letters · 2021 · 93 citations · Full text

Frequency Stabilization of a Laser Diode with Use of Light-Induced Birefringence in an Atomic Vapor

Yutaka Yoshikawa, Takeshi Umeki, Takuro Mukae et al. · Applied Optics · 2003 · 81 citations

Optical Pumping, Photonics, Atomic Vapor +14