R. F. Werner
Published 1998-04-01Version 1
We construct the unique optimal quantum device for turning a finite number of d-level quantum systems in the same unknown pure state \sigma into M systems of the same kind, in an approximation of the M-fold tensor product of the state \sigma.
Comments: 12 pages, plain TeX, no figs
A Remark on the Optimal Cloning of An N-Level Quantum System
Quantum partial teleportation as optimal cloning at a distance
Optimal Cloning and No Signaling
