%0 Journal Article
%T Rabi oscillations and macroscopic quantum superposition states
%A Marco Frasca
%J Physics
%D 2001
%I arXiv
%R 10.1103/PhysRevA.66.023810
%X A two-level atom interacting with a single radiation mode is considered, without the rotating-wave approximation, in the strong coupling regime. It is shown that, in agreement with the recent results on Rabi oscillations in a Josephson junction (Y. Nakamura, Yu. A. Pashkin and J. S. Tsai, Phys. Rev. Lett. {\bf 87}, 246601 (2001)), the Rabi frequency is indeed proportional to first kind integer order Bessel functions in the limit of a large number of photons and the dressed states are macroscopic quantum superposition states. To approach this problem analytically use is made of the dual Dyson series and the rotating-wave approximation.
%U http://arxiv.org/abs/quant-ph/0111134v3