Fast Excitation and Photon Emission of a Single-Atom-Cavity System
  We report on the fast excitation of a single atom coupled to an optical cavity using laser pulses that are much shorter than all other relevant processes. The cavity frequency constitutes a control parameter that allows the creation of single photons in a superposition of two tunable frequencies. Each photon emitted from the cavity thus exhibits a pronounced amplitude modulation determined by the oscillatory energy exchange between the atom and the cavity. Our technique constitutes a versatile tool for future quantum networking experiments. 
J. Bochmann, M. Muecke, G. Langfahl-Klabes, C. Erbel, B. Weber, H. P.   Specht, D. L. Moehring, and G. Rempe