Reverse coherent information

Phys Rev Lett. 2009 May 29;102(21):210501. doi: 10.1103/PhysRevLett.102.210501. Epub 2009 May 29.

Abstract

In this Letter we define a family of entanglement distribution protocols assisted by feedback classical communication that gives an operational interpretation to reverse coherent information, i.e., the symmetric counterpart of the well-known coherent information. This leads to the definition of a new entanglement distribution capacity that exceeds the unassisted capacity for some interesting channels.