Cavity-induced decay of Floquet states in a bichromatic driving field

Agarwal, G. S. ; Lange, W. ; Walther, H. (1995) Cavity-induced decay of Floquet states in a bichromatic driving field Physical Review A, 51 (1). pp. 721-735. ISSN 1050-2947

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A theoretical study of the dynamics of Rydberg atoms in a microwave cavity driven by a strong bichromatic field is presented. The resonator is assumed to operate in the low-Q regime. As a consequence, photons emitted by the atoms are dissipated in the cavity walls during the interaction time of the atoms inside the resonator. In this situation the cavity field follows the atomic dynamics adiabatically. The transient behavior of the system is analyzed in terms of Floquet states, and cavity-induced transition rates between these states are calculated for a large range of parameters of the bichromatic field. Narrow resonances are found in the transition rates, in agreement with recent experimental investigations of cavity Rydberg atoms subjected to strong bichromatic driving. We explain in detail the structure of the resonances, which is determined by the frequency-dependent cavity-mode density as well as the Rabi frequencies of the applied fields. The intensity-dependent shifts of the resonance frequencies are also calculated and found to be largely insensitive to inhomogeneous broadening. Finally, the numerical results are compared with experimental observations.

Item Type:Article
Source:Copyright of this article belongs to The American Physical Society.
ID Code:90416
Deposited On:10 May 2012 04:10
Last Modified:19 May 2016 04:38

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