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Collective Decoherence of Nuclear Spin Clusters

A. Fedorov·L. Fedichkin
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Abstract

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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A. Fedorov, L. Fedichkin. 2005-09-12. Collective Decoherence of Nuclear Spin Clusters. https://doi.org/10.1088/0953-8984%2F18%2F12%2F005

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