Resonant Perturbation Theory of Decoherence and Relaxation of Quantum Bits

M. Merkli, G. P. Berman and I. M. Sigal

Advances in Mathematical Physics, 2010, vol. 2010, 1-20

Abstract:

We describe our recent results on the resonant perturbation theory of decoherence and relaxation for quantum systems 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 bosonic fields. We derive a representation of the reduced dynamics valid for all times 𠑡 ≥ 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.

Date: 2010
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Persistent link: https://EconPapers.repec.org/RePEc:hin:jnlamp:169710

DOI: 10.1155/2010/169710

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