Decoherence of collective atomic spin states due to inhomogeneous coupling

Details Decoherence of collective atomic spin states due to inhomogeneous coupling Decoherence of collective atomic spin states due to inhomogeneous coupling

2002-03-15

arxiv.org/abs/quant-ph/0203072v1

Physics

Quantum Physics

4 pages, 4 figs. submitted

Scientific paper

10.1103/PhysRevA.67.063815

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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