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Spectrum of qubit oscillations from Bloch equations

Rusko Ruskov, Alexander N. Korotkov

cond-mat.mes-hallarXiv:cond-mat/0202303

Abstract

We have developed a formalism suitable for calculation of the output spectrum of a detector continuously measuring quantum coherent oscillations in a solid-state qubit, starting from microscopic Bloch equations. The results coincide with that obtained using Bayesian and master equation approaches. The previous results are generalized to the cases of arbitrary detector response and finite detector temperature.

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