Generation of Non-Classical Microwave Photon States in an Inductor–Capacitor Resonator Coupled to a Superconducting Flux Qubit

Abstract

The quantum nature of a sub-millimeter sized superconducting inductor–capacitor (LC) resonator is been demonstrated. By employing a series of pulse sequences that induce half a cycle of vacuum Rabi oscillations, we put a single microwave photons into an LC resonator from a superconducting flux qubit. Sub-Poissonian photon number distributions obtained by the Fourier transformation of observed quantum oscillations between the |n,e> and |n+1,g> states (n: photon number in the resonator, g,e: qubit state) indicates the successful generation of non-classical photon states in an LC resonator.