Optimal Broadcasting of Mixed States
Quantum Physics
2009-11-13 v4
Abstract
The N to M (M>N) universal quantum broadcasting of mixed states are proposed for qubits system. The broadcasting of mixed states is universal and optimal in the sense that the shrinking factor is independent of input state and achieves the upper bound. The quantum broadcasting of mixed qubits is a generalization of the universal quantum cloning machine for identical pure input states. A new pure state decompositions of the identical mixed qubits are obtained.
Cite
@article{arxiv.quant-ph/0609182,
title = {Optimal Broadcasting of Mixed States},
author = {Gui-Fang Dang and Heng Fan},
journal= {arXiv preprint arXiv:quant-ph/0609182},
year = {2009}
}
Comments
10 pages, published version