Papers › Self-stimulated pulse echo trains from inhomogeneously broadened spin ensembles
Self-stimulated pulse echo trains from inhomogeneously broadened spin ensembles
Kamanasish Debnath, Gavin Dold, John J. L. Morton, Klaus Mølmer
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We show experimentally and describe theoretically how a conventional magnetic resonance Hahn echo sequence can lead to a self-stimulated pulse echo train when an inhomogeneously broadened spin ensemble is coupled to a resonator. Effective strong coupling between the subsystems assures that the first Hahn echo can act as a refocussing pulse on the spins, leading to self-stimulated secondary echoes. Within the framework of mean field theory, we show that this process can continue multiple times leading to a train of echoes. We introduce an analytical model that explains the shape of the first echo and numerical results that account well for the experimentally observed shape and strength of the echo train and provides insights into the collective effects involved.
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