Driven spin-bath decoherence in the molecular magnet V15

Details Driven spin-bath decoherence in the molecular magnet V15 Driven spin-bath decoherence in the molecular magnet V15

2010-06-25

arxiv.org/abs/1006.4960v2

Physics

Condensed Matter

Strongly Correlated Electrons

Scientific paper

10.1016/j.jmr.2010.12.015

The measured Rabi oscillations of an ensemble of spins (here the spins 3/2 of the V15 single molecular magnet) are strongly damped by the excitation ac-field. The corresponding decoherence mechanism is attributed to an electromagnetic noise created by the dipolar spin-bath, inhomogeneously driven by the microwave field. Decoherence by electronic and nuclear spin-baths express themselves very differently vs microwave power. This decoherence mechanism should apply to all types of weakly interacting ensembles of qubits, beyond magnetism.

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