Two-tone spectroscopy of high-frequency quantum circuits with a Josephson emitter

• URL: http://arxiv.org/abs/2406.08066v1
• Date: Wed, 12 Jun 2024 10:33:53 GMT
• Title: Two-tone spectroscopy of high-frequency quantum circuits with a Josephson emitter
• Authors: A. Peugeot, H. Riechert, S. Annabi, L. Balembois, M. Villiers, E. Flurin, J. Griesmar, E. Arrighi, J. -D. Pillet, L. Bretheau,
• Abstract summary: We perform two-tone spectroscopy on quantum circuits, where high-frequency radiation is generated by a voltage-biased superconductor-normal-superconductor Josephson junction. We demonstrate that this two-tone Josephson spectroscopy operates well into the millimeter-wave band, reaching frequencies larger than 80 GHz.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We perform two-tone spectroscopy on quantum circuits, where high-frequency radiation is generated by a voltage-biased superconductor-normal-superconductor Josephson junction and detection is carried out by an ancillary microwave resonator. We implement this protocol on two different systems, a transmon qubit and a $\lambda/4$ resonator. We demonstrate that this two-tone Josephson spectroscopy operates well into the millimeter-wave band, reaching frequencies larger than 80 GHz, and is well-suited for probing highly coherent quantum systems.

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