Flip-Chip-Based Microwave Spectroscopy of Andreev Bound States in a Planar Josephson Junction
Flip-Chip-Based Microwave Spectroscopy of Andreev Bound States in a Planar Josephson Junction
We demonstrate a flip-chip-based approach to microwave measurements of Andreev bound states in a gate-tunable planar Josephson junction using inductively-coupled superconducting low-loss resonators. By means of electrostatic gating, we present control of both the density and transmission of Andreev bound states. Phase biasing of the device shifted the resonator frequency, …