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Strong Coupling Theory of Two Level Atoms in Periodic Fields

J. C. A. Barata·W. F. Wreszinski
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Abstract

We present a new convergent strong coupling expansion for two-level atoms in external periodic fields, free of secular terms. As a first application, we show that the coherent destruction of tunnelling is a third-order effect. We also present an exact treatment of the high-frequency region, and compare it with the theory of averaging. The qualitative frequency spectrum of the transition probability amplitude contains an effective Rabi frequency.

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J. C. A. Barata, W. F. Wreszinski. 1999-06-14. Strong Coupling Theory of Two Level Atoms in Periodic Fields. https://doi.org/10.1103/physrevlett.84.2112

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