Information between quantum systems via POVMs
量子物理
2007-05-23 v3
摘要
The concepts of `conditional entropy' and `information' retain their validity for quantum systems, but their properties differ somewhat from those of their classical counterparts; specifically, some equalities and inequalities of classical information theory are in general violated. In this paper the concepts are generalized to include arbitrary indirect measurements (POVMs). Though the generalization is straightforward, it is important to ascertain that the basic relationships between the generalized quantitites remain the same for the POVMs as for direct measurements.
引用
@article{arxiv.quant-ph/0306058,
title = {Information between quantum systems via POVMs},
author = {Lev B. Levitin and Tommaso Toffoli},
journal= {arXiv preprint arXiv:quant-ph/0306058},
year = {2007}
}
备注
6 pages, added proof of Th.2 and responses to referees' suggestions