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

被引：3

作者：

Yamaguchi, Aiko ^{[1
,2
]}

Masuda, Shumpei ^{[2
,3
]}

Matsuzaki, Yuichiro ^{[4
]}

Yamaji, Tomohiro ^{[1
,2
]}

Satoh, Tetsuro ^{[1
,2
]}

Morioka, Ayuka ^{[1
,2
]}

Kawakami, Yohei ^{[1
,2
]}

Igarashi, Yuichi ^{[1
,2
]}

Shirane, Masayuki ^{[1
,2
]}

Yamamoto, Tsuyoshi ^{[1
,2
]}

机构：

[1] NEC Corp Ltd, Secure Syst Platform Res Labs, Kawasaki, Kanagawa 2110011, Japan

[2] Natl Inst Adv Ind Sci & Technol, NEC AIST Quantum Technol Cooperat Res Lab, Tsukuba, Ibaraki 3058560, Japan

[3] Natl Inst Adv Ind Sci & Technol, Global Res & Dev Ctr Business Quantum AI Technol G, AIST, 1-1-1 Umezono, Tsukuba, Ibaraki 3058568, Japan

[4] Chuo Univ, 1-13-27 Kasuga,Bunkyo Ku, Tokyo 1128551, Japan

来源：

NEW JOURNAL OF PHYSICS | 2024年 / 26卷 / 04期

关键词：

Kerr parametric oscillator; two-photon drive; spectroscopy; !text type='PYTHON']PYTHON[!/text] FRAMEWORK; QUANTUM; DYNAMICS; STATES; QUTIP;

D O I：

10.1088/1367-2630/ad3c64

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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.

引用

页数：12