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arXiv · 2209.00909

Spectroscopic estimation of the photon number for superconducting Kerr parametric oscillators

Keisuke Matsumoto·Aiko Yamaguchi·Tsuyoshi Yamamoto·Shiro Kawabata·Yuichiro Matsuzaki
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Abstract

Quantum annealing (QA) is a way to solve combinational optimization problems. Kerr nonlinear parametric oscillators (KPOs) are promising devices for implementing QA. When we solve the combinational optimization problems using KPOs, it is necessary to precisely control the photon number of the KPOs. Here, we propose a feasible method to estimate the photon number of the KPO. We consider coupling an ancillary qubit to the KPO and show that spectroscopic measurements on the ancillary qubit provide information on the photon number of the KPO.

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Keisuke Matsumoto, Aiko Yamaguchi, Tsuyoshi Yamamoto, Shiro Kawabata, Yuichiro Matsuzaki. 2022-09-02. Spectroscopic estimation of the photon number for superconducting Kerr parametric oscillators. https://doi.org/10.35848/1347-4065%2Facc3a8

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