paper

Quantum memory for microwave photons in an inhomogeneously broadened spin ensemble

arXiv:1301.1500 · doi:10.1103/PhysRevLett.110.250503

Abstract

We propose a multi-mode quantum memory protocol able to store the quantum state of the field in a microwave resonator into an ensemble of electronic spins. The stored information is protected against inhomogeneous broadening of the spin ensemble by spin-echo techniques resulting in memory times orders of magnitude longer than previously achieved. By calculating the evolution of the first and second moments of the spin-cavity system variables for realistic experimental parameters, we show that a memory based on NV center spins in diamond can store a qubit encoded on the |0> and |1> Fock states of the field with 80% fidelity.

5 pages, 4 figures, 11 pages supplementary material

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