Cloning of observables
量子物理
2009-11-11 v2
摘要
We introduce the concept of cloning for classes of observables and classify cloning machines for qubit systems according to the number of parameters needed to describe the class under investigation. A no-cloning theorem for observables is derived and the connections between cloning of observables and joint measurements of noncommuting observables are elucidated. Relationships with cloning of states and non-demolition measurements are also analyzed.
引用
@article{arxiv.quant-ph/0509170,
title = {Cloning of observables},
author = {Alessandro Ferraro and Matteo Galbiati and Matteo G. A. Paris},
journal= {arXiv preprint arXiv:quant-ph/0509170},
year = {2009}
}
备注
revised and enlarged version, 2 figures