T. Yamashima

Over-8-dB squeezed light generation by a broadband waveguide optical parametric amplifier toward fault-tolerant ultra-fast quantum computers

T. Umeki, K. Enbutsu, M. Endo, 2023, Applied Physics Letters.

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

T. Umeki, K. Enbutsu, M. Endo, 2022, Applied Physics Letters.

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

A. Furusawa, T. Umeki, T. Kashiwazaki, 2021, Applied Physics Letters.

Continuous-wave 6-dB-squeezed light with 2.5-THz-bandwidth from single-mode PPLN waveguide

Takushi Kazama, Takeshi Umeki, Koji Enbutsu, 2020, 2004.02407.