Resonant Perturbation Theory of Decoherence and Relaxation of Quantum Bits | Zendy

Marco Merkli | Zendy; G. P. Berman | Zendy; Israel Michael Sigal | Zendy

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Resonant Perturbation Theory of Decoherence and Relaxation of Quantum Bits

Author(s) -

Marco Merkli,

G. P. Berman,

Israel Michael Sigal

Publication year - 2010

Publication title -

advances in mathematical physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.283

H-Index - 23

eISSN - 1687-9139

pISSN - 1687-9120

DOI - 10.1155/2010/169710

Subject(s) - quantum decoherence , qubit , perturbation (astronomy) , quantum , physics , quantum mechanics , master equation , perturbation theory (quantum mechanics) , quantum dissipation , statistical physics , relaxation (psychology) , psychology , social psychology

We describe our recent results on the resonant perturbation theory of decoherenceand relaxation for quantum systems with many qubits. The approachrepresents a rigorous analysis of the phenomenon of decoherence and relaxationfor general N-level systems coupled to reservoirs of bosonic fields. We derivea representation of the reduced dynamics valid for all times t≥0 and for smallbut fixed interaction strength. Our approach does not involve master equationapproximations and applies to a wide variety of systems which are not explicitlysolvable

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