[25a-12P-1~8] 3.9 Optical quantum physics and technologies (formerly 3.10)

10:30 AM - 10:45 AM JST(1:30 AM - 1:45 AM UTC)

[25a-12P-4] [The 55th Young Scientist Presentation Award Speech] Generation and Observation of Broadband Optical Entangled States

〇Akito Kawasaki¹, Hector Brunel^1,2, Ryuhoh Ide¹, Takumi Suzuki¹, Takahiro Kashiwazaki³, Asuka Inoue³, Takeshi Umeki³, Taichi Yamashima¹, Atsushi Sakaguchi⁴, Kan Takase^1,4, Mamoru Endo^1,4, Warit Asavanant^1,4, Akira Furusawa^1,4 (1.The Univ. of Tokyo, 2.ENS, 3.NTT device technology labs, 4.Riken RQC)

Keywords:

Quantum Computation,Entanglement,Optical communication

The bandwidth of optical quantum information processing system with carrier frequency of several hundred THz are limited to several hundred MHz by homodyne (HD) detection that read out quantum information. In these days, HD instruments with tens of GHz bandwidth have been developed using 5G technologies, however their efficiency is low and it is difficult to apply them to loss-sensitive quantum light . In this research, we improve the loss tolerance of quantum light by using optical amplification and generate and verify broadband quantum entangled states.