Progress towards coupling an electron-on-neon quantum memory to a superconducting qubit

A single electron charge qubit can be defined by electrostatic gating of an electron trapped in vacuum above the surface of solid neon at millikelvin temperatures. Recent experiments have demonstrated coherent control and dispersive measurement of the charge qubit using a superconducting microwave resonator. We present our recent progress toward a coherent interface between a superconducting transmon qubit and the electron-on-neon charge qubit. We utilize a shared resonator bus to mediate interactions through virtual microwave photons. Our progress is a first step toward the realization of a long-lived quantum memory based on the spin states of the electron that interfaces with the circuit quantum electrodynamics architecture.