Dark Matter Signal Enhancement with a Superconducting Qubit

The signal from low mass bosonic dark matter, such as axions or hidden photons, in 5-30 GHz regime is vanishing due to the shrinking detector volume. We propose to enhance the signal rate by initializing the microwave cavity in a large $n$-photon Fock state using the non-linearity of a superconducting qubit. We expect to enhance the signal rate by a factor of at least 10 before being limited by the coherence time of the cavity. Experimental protocol and recent results will be presented to demonstrate this novel technique.