[19p-A32-1~17] 3.9 Optical quantum physics and technologies

2:30 PM - 2:45 PM JST(5:30 AM - 5:45 AM UTC)

[19p-A32-5] PPLN monolithic integration of pump-signal light divider for optical quantum processor

〇ASUKA INOUE¹, TAKAHIRO KASHIWAZAKI¹, TAICHI YAMASHIMA¹, MAMORU ENDO^2,3, TAKESHI UMEKI¹, AKIRA FURUSAWA^2,3 (1.NTT, 2.The Univ. of Tokyo, 3.Riken RQC)

Keywords:

squeezed light,PPLN,optical parametric amplifier

Optical quantum computers have attracted research interest because of their ability to realize high-speed quantum computation. To realize this system, optical parametric amplifiers (OPAs) are key devices, and optical phase-locking in large-scale optical interferometers including multiple OPAs is required. As such, our research focuses on monolithic integration of multiple PPLN waveguide OPAs.One of the key component to realize this photonic integrated circuit is an excitation/signal light multiplexer. In this paper, we report on the fabrication of a low-loss, wide-bandwidth multiplexer using a multimode interference waveguide on lithium niobate and its feasibility verification for optical quantum signal measurements.