[23a-A601-1~9] 3.9 Optical quantum physics and technologies (formerly 3.10)

9:00 AM - 9:15 AM JST(12:00 AM - 12:15 AM UTC)

[23a-A601-1] [Young Scientist Presentation Award Speech] Ultrafast optical quadrature amplitude measurement for ultrafast optical quantum computation by combining optical communication technology and optical quantum technology

〇Asuka Inoue¹, Takahiro Kashiwazaki¹, Taichi Yamashima², Naoto Takanashi², Takushi Kazama¹, Koji Enbutsu¹, Kei Watanabe¹, Takeshi Umeki¹, Mamoru Endo^2,3, Akira Furusawa^2,3 (1.NTT, 2.Univ. of Tokyo, 3.RIKEN RQC)

Keywords:

quantum computer,squeezed light,PPLN waveguide

Toward the realization of measurement-based ultrafast optical quantum computer, we introduce a new method for real-time broadband quadrature amplitude measurement. In this method, an optical phase sensitive amplifer is inserted before optical detector as pre-amplifier to provide loss tolerance to the quantum state. As a result, a high-speed detector for optical communications can be applied, and quadrature amplitude measurement over 10 GHz can be achieved. As a future prospect, we will introduce ultra-fast optical quantum processors that fully utilize THz-order bandwidth of squeezed light. This can be realized by combining quantum technology and optical communication technology.