Collective Decoherence of Nuclear Spin Clusters

Details Collective Decoherence of Nuclear Spin Clusters Collective Decoherence of Nuclear Spin Clusters

2005-02-27

arxiv.org/abs/quant-ph/0502178v2

J. Phys.: Condens. Matter 18, 3217-3228 (2006)

Physics

Quantum Physics

4 pages, 4 figures

Scientific paper

10.1088/0953-8984/18/12/005

The problem of dipole-dipole decoherence of nuclear spins is considered for strongly entangled spin cluster. Our results show that its dynamics can be described as the decoherence due to interaction with a composite bath consisting of fully correlated and uncorrelated parts. The correlated term causes the slower decay of coherence at larger times. The decoherence rate scales up as a square root of the number of spins giving the linear scaling of the resulting error. Our theory is consistent with recent experiment reported in decoherence of correlated spin clusters.

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