Entropy and Wigner Functions
量子物理
2009-11-07 v1
摘要
The properties of an alternative definition of quantum entropy, based on Wigner functions, are discussed. Such definition emerges naturally from the Wigner representation of quantum mechanics, and can easily quantify the amount of entanglement of a quantum state. It is shown that smoothing of the Wigner function induces an increase in entropy. This fact is used to derive some simple rules to construct positive definite probability distributions which are also admissible Wigner functions
引用
@article{arxiv.quant-ph/0203102,
title = {Entropy and Wigner Functions},
author = {G. Manfredi and M. R. Feix},
journal= {arXiv preprint arXiv:quant-ph/0203102},
year = {2009}
}
备注
18 pages