Compact Superconducting Resonator Platform for High-Pressure Experiments in a Diamond Anvil Cell

Diamond anvil cells (DACs) are powerful platforms for exploring materials under extreme pressures, but the integration of devices within them remains constrained by nanofabrication and spatial limitations. Meanwhile, superconducting resonators provide a sensitive probe of both superconducting properties and two-level system (TLS) losses. Integrating resonators into DACs could reveal new loss mechanisms and pressure-dependent behavior. In this work, we present the design and fabrication of compact lumped-element superconducting resonators patterned directly onto a diamond anvil with a 1 mm culet. We present preliminary results on the characterization of these resonators, marking a first step toward studying TLS behavior and cavity perturbation effects under high pressure.