Phys. Rev. A 67, 063815 (2003) [5 pages]Decoherence of collective atomic spin states due to inhomogeneous couplingReceived 16 August 2002; published 26 June 2003 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 √N as the characteristic decoherence rate scale with N being the total number of atoms. Our results shed new light on attempts for realizing quantum information processing and storage with atomic ensembles. © 2003 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.67.063815
DOI:
10.1103/PhysRevA.67.063815
PACS:
42.50.Ct, 42.50.Gy, 03.65.Yz, 03.67.Lx
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