Resonant Perturbation Theory of Decoherence and Relaxation of Quantum Bits

Autor: Merkli, M., Berman, G. P., Sigal, I. M.
Rok vydání: 2009
Předmět:
Druh dokumentu: Working Paper
Popis: 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.
Databáze: arXiv