Storage of multiple coherent microwave excitations in an electron spin ensemble.

@article{Wu2010StorageOM,
  title={Storage of multiple coherent microwave excitations in an electron spin ensemble.},
  author={Hua-ping Wu and Richard E. George and Janus H. Wesenberg and Klaus M{\o}lmer and David I. Schuster and Robert J. Schoelkopf and Kohei M. Itoh and Arzhang Ardavan and John J. L. Morton and G. Andrew D. Briggs},
  journal={Physical review letters},
  year={2010},
  volume={105 14},
  pages={
          140503
        }
}
Strong coupling between a microwave photon and electron spins, which could enable a long-lived quantum memory element for superconducting qubits, is possible using a large ensemble of spins. This represents an inefficient use of resources unless multiple photons, or qubits, can be orthogonally stored and retrieved. Here we employ holographic techniques to realize a coherent memory using a pulsed magnetic field gradient and demonstrate the storage and retrieval of up to 100 weak 10 GHz coherent… Expand
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