Storage and Retrieval of a Microwave Field in a Spin Ensemble

Abstract

We report the storage and retrieval of a small microwave field from a superconducting resonator into collective excitations of a spin ensemble. The spins are nitrogen-vacancy centers in a diamond crystal. The storage time of the order of 30 ns is limited by inhomogeneous broadening of the spin ensemble.

4 pages + supplementary material. Submitted to PRL