Testing single-photon wave packets by Hong-Ou-Mandel interference
  We discuss characterization of single-photon wave packets by measuring Hong-Ou-Mandel interference with a weak coherent pulse. A complete multimode calculation is presented and effects of multiphoton terms in the coherent field as well as the impact of source and detection imperfections are discussed. 
Piotr Kolenderski, Konrad Banaszek