G. Alber, J. Z. Bernád, M. Stobińska, L. L. Sánchez-Soto, G. Leuchs
We investigate the quantum electrodynamics (QED) of a single two-level atom located at the focus of a parabolic cavity. We first work out the modifications of the spontaneous emission induced by the presence of this boundary in the optical regime, where the dipole and the rotating-wave approximations apply. Furthermore, the single-photon state that leaves the cavity asymptotically is determined. The corresponding time-reversed single-photon quantum state is capable of exciting the atom in this extreme multimode scenario with near-unit probability. Using semiclassical methods, we derive a photon-path representation for the relevant transition amplitudes and show that it constitutes a satisfactory approximation for a wide range of wavelengths.
View original:
http://arxiv.org/abs/1305.2488
No comments:
Post a Comment