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arXiv · 1904.03051

Microwave Scattering in the Subohmic Spin-Boson Systems of Superconducting Circuits

Tsuyoshi Yamamoto·Takeo Kato
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Abstract

We study quantum critical phenomena in the microwave scattering of the subohmic spin-boson system, which exhibits a quantum phase transition at a critical system-reservoir coupling. By relating the reflection coefficient of a microwave with the dynamic susceptibility of the subohmic spin-boson system, we clarify the appearance of quantum critical phenomena in microwave scattering. Further, we propose experimental setups to realize the subohmic spin-boson system in a superconducting circuit composed of a charge qubit and a dissipative transmission line.

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Tsuyoshi Yamamoto, Takeo Kato. 2019-04-05. Microwave Scattering in the Subohmic Spin-Boson Systems of Superconducting Circuits. https://doi.org/10.7566/jpsj.88.094601

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