Spectroscopic method for measuring the number of photons in superconducting Kerr parametric oscillators
ORAL
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.
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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Publication: Matsumoto, Keisuke, et al. "Spectroscopic estimation of the photon number for superconducting Kerr parametric oscillators." arXiv preprint arXiv:2209.00909 (2022).
Presenters
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keisuke matsumoto
Tokyo University of Science
Authors
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keisuke matsumoto
Tokyo University of Science
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Aiko Yamaguchi
NEC
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Tsuyoshi Yamamoto
Secure System Platform Research Laboratories, NEC Corporation, Kawasaki, Kanagawa, Japan, NEC Corporaion, NEC
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Shiro Kawabata
National Institute of Advanced Industrial Science and Technology, AIST
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Yuichiro Matsuzaki
AIST, National Institute of Advanced Industrial Science and Technology, National Institute of Advanced Industrial Science and Techno, National institute of Advanced Industrial Science and Technology (AIST)