Abstract
A solution is obtained for the evolution operator which describes a resonance interaction of a multilevel system with quantized electromagnetic field. Its Taylor expansion in the interaction parameter contains no secular terms. As an example, the interaction of a two-level system with one-mode field is considered (with one-and two-photon resonance).
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 9, pp. 39–43, September, 1983.
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Zakharov, V.I., Tyuterev, V.G. Nonsecular expansion for the evolution operator in nonrelativistic quantum electrodynamics. Soviet Physics Journal 26, 807–810 (1983). https://doi.org/10.1007/BF00891845
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DOI: https://doi.org/10.1007/BF00891845