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Decoherence of collective atomic spin states due to inhomogeneous coupling

C. P. Sun·S. Yi·L. You
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Abstract

We investigate the decoherence of a superposition of symmetric collective internal states of an atomic ensemble due to inhomogeneous coupling to external control fields. For asymptotically large system, we find the characteristic decoherence rate scales as $\sqrt{N}$ with $N$ being the total number of atoms. Our results shed new light on attempts for quantum information processing and storage with atomic ensembles.

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C. P. Sun, S. Yi, L. You. 2002-03-15. Decoherence of collective atomic spin states due to inhomogeneous coupling. https://doi.org/10.1103/physreva.67.063815

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