Photon subtraction from traveling fields - recent experimental   demonstrations
  We review our most recent results on application of the photon subtraction technique for optical quantum information processing primitives, in particular entanglement distillation and generation of squeezed qubit states. As an introduction we provide a brief summary of other experimental accomplishments in the field. 
Jonas S. Neergaard-Nielsen, Makoto Takeuchi, Kentaro Wakui, Hiroki   Takahashi, Kazuhiro Hayasaka, Masahiro Takeoka, and Mas...
quant-ph physics.optics