Yi-Xin Chen, Dong Yang
Published 2002-04-01, updated 2002-04-09Version 3
It is impossible to discriminate four Bell states through local operations and classical communication (LOCC), if only one copy is provided. To complete this task, two copies will suffice and be necessary. When $n$ copies are provided, we show that the distillable entanglement is exactly $n-2$.
Comments: An argument in the original paper is replaced by a procedure of strict proof
Distinguishability of the Bell states
Local permutations of products of Bell states and entanglement distillation
Local cloning of Bell states and distillable entanglement
