Аннотация:In this work we show the device based on the resistively and capacitively shunted Josephson junction embedded into a resonator which can be used as a cryogenic qubit driver [1-4]. The external resonant circuit is used to reduce the radiation bandwidth and suppress unwanted transitions in the qubit. We characterize the device by measuring its output power spectrum, and then we use this device to drive the transom qubit in a special setup shown in Fig. 1. In this experiment we perform a standard two-tone qubit spectroscopy using either a conventional room-temperature based microwave generator or a cryogenic on-chip Josephson junction-based source.
