Characterising a universal cloning machine by maximum-likelihood estimation
量子物理
2009-11-06 v2
摘要
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.
引用
@article{arxiv.quant-ph/0010004,
title = {Characterising a universal cloning machine by maximum-likelihood estimation},
author = {Massimiliano F. Sacchi},
journal= {arXiv preprint arXiv:quant-ph/0010004},
year = {2009}
}
备注
5 pages, 2 figures