Towards hybrid quantum computing: coupling a spin ensemble to a superconducting qubit through a resonator

2011-10-02 - 2011-10-06

D. Vion

Quantum Spintronics, Sardinia, Italy

We report the realization of a quantum circuit in which an ensemble of electronic spins is coupled to a frequency tunable superconducting resonator. The spins are Nitrogen-Vacancy centers in a diamond crystal. The achievement of strong coupling is manifested by the appearance of a vacuum Rabi splitting in the transmission spectrum of the resonator when its frequency is tuned through the NV center electron spin resonance.