[17p-S4_203-1~12] 3.9 Optical quantum physics and technologies

3:15 PM - 3:30 PM JST(6:15 AM - 6:30 AM UTC)

[17p-S4_203-6] Homodyne Measurement of a Squeezed Vacuum State using Pulsed LO Light

〇(B)Taketsugu Kawashima¹, Yoshitsugu Hoshino¹, Yi-Ru Chen¹, Quentin Civario¹, Akito Kawasaki¹, Shota Yokoyama¹, Tatsuki Sonoyama¹, Warit Asavanant¹ (1.OptQC Corp.)

Keywords:

Quantum Optics,Homodyne Measurement

In continuous-variable measurement-based quantum computing (CV-MBQC) using light, "hybrid architectures" that combine continuous-wave (CW) cluster states with pulsed auxiliary states are attracting attention. In this study, we propose a detection method for CW light using pulsed homodyne measurement, which enables high-speed measurement and eliminates the need for post-processing. To verify the validity of this approach, we constructed an experimental system to perform measurement on a CW vacuum squeezed state at the 1545 nm band using 10 MHz pulses generated via intensity modulation. In this presentation, we report on the theoretical background and experimental results of this research.