Entanglement engineering of one-photon wavepackets using a single-atom   source
  We propose a cavity-QED scheme for the controlled generation of sequences of entangled single-photon wavepackets. A photon is created inside a cavity via an active medium, such as an atom, and decays into the continuum of radiation modes outside the cavity(coupled, for example to an optical fiber). Subsequent wavepackets generated in this way behave as independent logical qubits. This and the possibility of producing maximally entangled multi-qubit states suggest many applications in quantum communication. 
K.M. Gheri, C. Saavedra, P. Toermae, J. I. Cirac, and P. Zoller