activity
20192022
most citedContinuous-wave 6-dB-squeezed light with 2.5-THz-bandwidth from single-mode PPLN waveguide

138 citations · 295 across the 3 of their papers we have counts for

collaborators

7 papers

quant-ph2022★ 54 cited

43-GHz bandwidth real-time amplitude measurement of 5-dB squeezed light using modularized optical parametric amplifier with 5G technology

Asuka Inoue, Takahiro Kashiwazaki, Taichi Yamashima +7

Continuous-variable optical quantum information processing (CVOQIP), where quantum information is encoded in a traveling wave of light called a flying qubit, is a candidate for a p…

quant-ph2022★ 103 cited

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 +3

A continuous-wave (CW) broadband high-level optical quadrature squeezer is essential for high-speed large-scale fault-tolerant quantum computing on a time-domain-multiplexed contin…

quant-ph2020

All-optical phase-sensitive detection for ultra-fast quantum computation

Naoto Takanashi, Asuka Inoue, Takahiro Kashiwazaki +5

Phase-sensitive detection is the essential projective measurement for measurement-based continuous-variable quantum information processing. The bandwidth of conventional electrical…

quant-ph2020★ 138 cited

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

Takahiro Kashiwazaki, Naoto Takanashi, Taichi Yamashima +5

Terahertz (THz)-bandwidth continuous-wave (CW) squeezed light is essential for integrating quantum processors with time-domain multiplexing (TDM) by using optical delay line interf…

quant-ph2019

4-dB quadrature squeezing with fiber-coupled PPLN ridge waveguide module

Naoto Takanashi, Takahiro Kashiwazaki, Takushi Kazama +4

We have developed an optical parametric amplification module for quadrature squeezing with input and output ports coupled with optical fibers for both fundamental and second harmon…

quant-ph2019

Wide-field SU(1,1) interferometer

G. Frascella, E. E. Mikhailov, N. Takanashi +3

An interferometer uses a sequence of two optical parametric amplifiers for achieving sub-shot-noise sensitivity to a phase shift introduced in between. We present t…