The Complete Quantum Cheshire Cat
  We show that a physical property can be entirely separated from the object it belongs to, hence realizing a complete quantum Cheshire cat. Our setup makes use of a type of quantum state of particular interest, namely an entangled pre- and post-selected state, in which the pre- and post-selections are entangled with each other. Finally we propose a scheme for the experimental implementation of these ideas. 
Yelena Guryanova, Nicolas Brunner, Sandu Popescu
quant-ph