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arXiv · 0911.3122

Resonant Perturbation Theory of Decoherence and Relaxation of Quantum Bits

M. Merkli·G. P. Berman·I. M. Sigal
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Abstract

We describe our recent results on the resonant perturbation theory of decoherence and relaxation for quantum system with many qubits. The approach represents a rigorous analysis of the phenomenon of decoherence and relaxation for general $N$-level systems coupled to reservoirs of the bosonic fields. We derive a representation of the reduced dynamics valid for all times $t\geq 0$ and for small but fixed interaction strength. Our approach does not involve master equation approximations and applies to a wide variety of systems which are not explicitly solvable.

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M. Merkli, G. P. Berman, I. M. Sigal. 2009-11-16. Resonant Perturbation Theory of Decoherence and Relaxation of Quantum Bits. https://arxiv.org/abs/0911.3122

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