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Superconducting Qubits

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

arXiv
Authors: T. Yamaji, S. Kagami, A. Yamaguchi, T. Satoh, K. Koshino, H. Goto, Z. R. Lin, Y. Nakamura, T. Yamamoto

Year

2020

Paper ID

20178

Status

Preprint

Abstract Read

~2 min

Abstract Words

93

Citations

N/A

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 π, whose probability can be controlled by an externally injected signal.

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  • We study microwave response of a Josephson parametric oscillator consisting of a superconducting transmission-line resonator with an embedded dc-SQUID.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2010.02621 [2] arXiv https://arxiv.org/abs/2010.02621 [3] Publisher https://arxiv.org/abs/2010.02621

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