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19 April 2024

» arxiv » 1508.7972

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Dissipation and resonance frequency shift of a resonator magnetically coupled to a semiclassical spin
J. M. de Voogd ; J. J. T. Wagenaar ; T. H. Oosterkamp ;
Date:	31 Aug 2015
Abstract:	We calculate the change of resonator properties of a mechanical or electromagnetic resonator, when magnetically coupled to a semiclassical spin. Starting with the Lagrangian of the complete system, we provide an analytical expression for the linear response function for the motion of the resonator. This shows that the resonance frequency and effective dissipation factor can change due to relaxation times of the spin. The same calculations are applied to electromagnetic resonators, providing a key to understand some of the problems of two level systems in quantum computing devices.
Source:	arXiv, 1508.7972
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