Characterising a universal cloning machine by maximum-likelihood estimation

Details Characterising a universal cloning machine by maximum-likelihood estimation Characterising a universal cloning machine by maximum-likelihood estimation

2000-10-02

arxiv.org/abs/quant-ph/0010004v2

Phys. Rev. A 64, 022106 (2001).

Physics

Quantum Physics

5 pages, 2 figures

Scientific paper

10.1103/PhysRevA.64.022106

We apply a general method for the estimation of completely positive maps to
the 1-to-2 universal covariant cloning machine. The method is based on the
maximum-likelihood principle, and makes use of random input states, along with
random projective measurements on the output clones. The downhill simplex
algorithm is applied for the maximisation of the likelihood functional.

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