[14a-K103-1~8] KS.2 Quantum Information Engineering Group

9:30 AM - 9:45 AM JST(12:30 AM - 12:45 AM UTC)

[14a-K103-3] Low-Temperature Characterization of a Beam Splitter on an Alumina Visible-Light Waveguide

〇Masayuki Hosoda¹, Itsuki Takagi¹, Ryota Kitagawa¹, Takuto Yamaguchi¹, Naoki Fushimi¹, Masaharu Hida¹, Toshiyuki Miyazawa¹, Kenichi Kawaguchi¹, Ryoichi Ishihara², Shintaro Sato¹ (1.Fujitsu LTD, 2.TUDelft)

Keywords:

Quantum Computer,Diamond Color Center,Photodetector

The electron spins of color centers in diamond are promising qubits due to their long coherence times. Integrating optical components within a cryostat is crucial for realizing scalable quantum computers. This work presents a low-temperature characterization of a beam splitter fabricated on an alumina visible-light waveguide, utilizing on-cryostat photodetectors. We report on the temperature dependence of the splitting ratio and measurement details.