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Decoherence and Relaxation of a Quantum Bit in the Presence of Rabi Oscillations

Anatoly Yu. Smirnov
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Abstract

Dissipative dynamics of a quantum bit driven by a strong resonant field and interacting with a heat bath is investigated. We derive generalized Bloch equations and find modifications of the qubit's damping rates caused by Rabi oscillations. Nonequilibrium decoherence of a phase qubit inductively coupled to a LC-circuit is considered as an illustration of the general results. It is argued that recent experimental results give a clear evidence of effective suppression of decoherence in a strongly driven flux qubit.

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Anatoly Yu. Smirnov. 2003-06-02. Decoherence and Relaxation of a Quantum Bit in the Presence of Rabi Oscillations. https://doi.org/10.1103/physrevb.67.155104

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