Hybrid circuit QED platform between a transmon and an electron-on-solid-neon charge qubit

The motional states of a single electron floating on a thin film of solid neon at cryogenic temperatures can reach coherence times several orders of magnitude longer than traditional charge qubits in semiconductor devices due to a longer physical distance between the electron and material defects within the substrate. In this talk we describe the preliminary characterization of a hybrid device that is capable of coupling such an electron charge qubit to a superconducting transmon qubit through virtual photons in a shared resonator bus. Our work marks the first steps towards a long-lived electron spin memory on solid neon interfaced with traditional superconducting-circuit-based quantum processors.