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arXiv · 2010.02621

Spectroscopic observation of the crossover from a classical Duffing oscillator to a Kerr parametric oscillator

T. Yamaji·S. Kagami·A. Yamaguchi·T. Satoh·K. Koshino·H. Goto·Z. R. Lin·Y. Nakamura·T. Yamamoto
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Abstract

We study microwave response of a Josephson parametric oscillator consisting of a superconducting transmission-line resonator with an embedded dc-SQUID. The dc-SQUID allows to control the magnitude of a Kerr nonlinearity over the ranges where it is smaller or larger than the photon loss rate. Spectroscopy measurements reveal the change of the microwave response from a classical Duffing oscillator to a Kerr parametric oscillator in a single device. In the single-photon Kerr regime, we observe parametric oscillations with a well-defined phase of either $0$ or $\pi$, whose probability can be controlled by an externally injected signal.

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T. Yamaji, S. Kagami, A. Yamaguchi, T. Satoh, K. Koshino, H. Goto, Z. R. Lin, Y. Nakamura, T. Yamamoto. 2020-10-06. Spectroscopic observation of the crossover from a classical Duffing oscillator to a Kerr parametric oscillator. https://doi.org/10.1103/physreva.105.023519

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