TY - JOUR AU - Bretheau, L. AB - 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. TI - Two-tone spectroscopy of high-frequency quantum circuits with a Josephson emitter JF - Quantum Physics DO - 10.1103/physrevapplied.22.064027 DA - 2024-12-09 UR - https://www.deepdyve.com/lp/arxiv-cornell-university/two-tone-spectroscopy-of-high-frequency-quantum-circuits-with-a-gNejw1GJGY VL - 2024 IS - 2406 DP - DeepDyve ER -