Generation of higher-order atomic dipole squeezing in a high-Q micromaser cavity. (VIII). Multi-photon interaction

Abstract

In our preceding serial works, we have investigated the generation of higherorder atomic dipole squeezing (HOADS) in a high-Q micromaser cavity, discussing the effects of dynamic Stark shift, atomic damping, atomic coherence and nonlinear one-photon processes and different initial states (for example, correlated and uncorrelated states, superposition states, squeezed vacuum).In this paper, we continue to study HOADS in a high-Q micromaser cavity, but consider that the atom interacts with the optical field via a multi-photon transition process and that the initial atom is arbitrarily prepared. For a vacuum initial field, we demonstrate that HOADS cannot occur if the atom is initially prepared in a chaotic state and that a coherent atomic state generates less efficient and stable HOADS than an arbitrary one. It is found that large detuning may lead to enhanced and strong HOADS. PACS (numbers): 42.50. Dv, 42.50.Lc,

Enhancement of Atom-Field Transfer of Coherence in a Two-Photon Micromaser Assisted by a Classical Field

“…In general, atoms conveniently prepared are injected inside a cavity, and their coupling to the quantized cavity field makes possible to modify it in such a way that nonclassical states of the field may be generated [2]. Other nonclassical effects, such as atomic dipole squeezing, may also occur in a micromaser system, as discussed in [3]. The cavity itself is normally cooled down to its vacuum state, and the field build up may be accomplished by coherent addition of photons to it.…”