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TT: Fachverband Tiefe Temperaturen

TT 50: Superconducting Electronics: SQUIDs, Qubits, Circuit QED II

TT 50.3: Vortrag

Donnerstag, 20. März 2025, 15:30–15:45, H36

Hybrid Microwave Resonators Integrated with van der Waals Superconductors — •Yejin Lee¹, Haolin Jin^1,2, Giuseppe Serpico^1,3, Tommaso Confalone^2,4, Berit Goodge¹, Edouard Lesne¹, Kornelius Nielsch^2,4, Nicola Poccia^3,4, and Uri Vool¹ — ¹Max Planck Institute for Chemical Physics of Solids, Dresden, Germany — ²Technische Universität Dresden, Germany — ³University of Naples Federico II, Italy — ⁴Leibniz Institute for Solid State and Materials Science Dresden, Germany

Superconducting microwave resonators are highly coherent devices that are extensively used in quantum circuits. Their robustness and sensitivity also make them excellent probes for exploring novel materials, which are coupled to them in a hybrid system. Particularly good candidates are van der Waals materials, whose microscopic size makes them incompatible with conventional bulk measurement methods. However, such hybrid platforms require the development of a new process to maintain the high quality of the circuit. We present a technique to integrate a microwave resonator with a superconducting thin van der Waals flake with a crystalline-preserved interface. We investigate their microwave response as a function of temperature under various microwave powers and magnetic field. The hybrid resonator exhibits a significant modification in its resonant mode with the presence of the flake while maintaining a high-quality factor. Hybrid superconducting circuits integrated with vdW crystals offer an extensive potential in probing materials' unique properties and for developing high-quality devices for quantum technology.

Keywords: Superconducting resonators; Van der Waals superconductors; Hybrid microwave circuits