Spectroscopy of flux-driven Kerr parametric oscillators by reflection coefficient measurement

Aiko Yamaguchi; Shumpei Masuda; Yuichiro Matsuzaki; Tomohiro Yamaji; Tetsuro Satoh; Ayuka Morioka; Yohei Kawakami; Yuichi Igarashi; Masayuki Shirane; Tsuyoshi Yamamoto

doi:10.1088/1367-2630/ad3c64

New Journal of Physics (Jan 2024)

Spectroscopy of flux-driven Kerr parametric oscillators by reflection coefficient measurement

Aiko Yamaguchi,
Shumpei Masuda,
Yuichiro Matsuzaki,
Tomohiro Yamaji,
Tetsuro Satoh,
Ayuka Morioka,
Yohei Kawakami,
Yuichi Igarashi,
Masayuki Shirane,
Tsuyoshi Yamamoto

Affiliations

Aiko Yamaguchi: ORCiD; Secure System Platform Research Laboratories, NEC Corporation, Kawasaki , Kanagawa 211-0011, Japan; NEC-AIST Quantum Technology Cooperative Research Laboratory, National Institute of Advanced Industrial Science and Technology (AIST) , Tsukuba, Ibaraki 305-8568, Japan
Shumpei Masuda: ORCiD; NEC-AIST Quantum Technology Cooperative Research Laboratory, National Institute of Advanced Industrial Science and Technology (AIST) , Tsukuba, Ibaraki 305-8568, Japan; Global Research and Development Center for Business by Quantum-AI Technology (G-QuAT), AIST, National Institute of Advanced Industrial Science and Technology (AIST) , 1-1-1, Umezono, Tsukuba, Ibaraki 305-8568, Japan
Yuichiro Matsuzaki: ORCiD; Department of Electrical, Electronic, and Communication Engineering, Faculty of Science and Engineering, Chuo University , 1-13-27 Kasuga, Bunkyo-ku, Tokyo 112-8551, Japan
Tomohiro Yamaji: ORCiD; Secure System Platform Research Laboratories, NEC Corporation, Kawasaki , Kanagawa 211-0011, Japan; NEC-AIST Quantum Technology Cooperative Research Laboratory, National Institute of Advanced Industrial Science and Technology (AIST) , Tsukuba, Ibaraki 305-8568, Japan
Tetsuro Satoh: ORCiD; Secure System Platform Research Laboratories, NEC Corporation, Kawasaki , Kanagawa 211-0011, Japan; NEC-AIST Quantum Technology Cooperative Research Laboratory, National Institute of Advanced Industrial Science and Technology (AIST) , Tsukuba, Ibaraki 305-8568, Japan
Ayuka Morioka: Secure System Platform Research Laboratories, NEC Corporation, Kawasaki , Kanagawa 211-0011, Japan; NEC-AIST Quantum Technology Cooperative Research Laboratory, National Institute of Advanced Industrial Science and Technology (AIST) , Tsukuba, Ibaraki 305-8568, Japan
Yohei Kawakami: ORCiD; Secure System Platform Research Laboratories, NEC Corporation, Kawasaki , Kanagawa 211-0011, Japan; NEC-AIST Quantum Technology Cooperative Research Laboratory, National Institute of Advanced Industrial Science and Technology (AIST) , Tsukuba, Ibaraki 305-8568, Japan
Yuichi Igarashi: Secure System Platform Research Laboratories, NEC Corporation, Kawasaki , Kanagawa 211-0011, Japan; NEC-AIST Quantum Technology Cooperative Research Laboratory, National Institute of Advanced Industrial Science and Technology (AIST) , Tsukuba, Ibaraki 305-8568, Japan
Masayuki Shirane: Secure System Platform Research Laboratories, NEC Corporation, Kawasaki , Kanagawa 211-0011, Japan; NEC-AIST Quantum Technology Cooperative Research Laboratory, National Institute of Advanced Industrial Science and Technology (AIST) , Tsukuba, Ibaraki 305-8568, Japan
Tsuyoshi Yamamoto: Secure System Platform Research Laboratories, NEC Corporation, Kawasaki , Kanagawa 211-0011, Japan; NEC-AIST Quantum Technology Cooperative Research Laboratory, National Institute of Advanced Industrial Science and Technology (AIST) , Tsukuba, Ibaraki 305-8568, Japan

DOI: https://doi.org/10.1088/1367-2630/ad3c64
Journal volume & issue: Vol. 26, no. 4
p. 043019

Abstract

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We report the spectroscopic characterization of a Kerr parametric oscillator (KPO) based on the measurement of its reflection coefficient under a two-photon drive induced by flux modulation. The measured reflection spectra show good agreement with numerical simulations in terms of their dependence on the two-photon drive amplitude. The spectra can be interpreted as changes in system’s eigenenergies, transition matrix elements, and the population of the eigenstates, although the linewidth of the resonance structure is not fully explained. We also show that the drive-amplitude dependence of the spectra can be explained analytically by using the concepts of Rabi splitting and the Stark shift. By comparing the experimentally obtained spectra with theory, we show that the two-photon drive amplitude at the device can be precisely determined, which is important for the application of KPOs in quantum information processing.

Published in New Journal of Physics

ISSN: 1367-2630 (Online)
Publisher: IOP Publishing
Country of publisher: United Kingdom
LCC subjects: Science: Physics
Website: https://iopscience.iop.org/journal/1367-2630

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