Negative entropy and information in quantum mechanics
量子物理
2009-10-28 v3 atom-ph
摘要
A framework for a quantum mechanical information theory is introduced that is based entirely on density operators, and gives rise to a unified description of classical correlation and quantum entanglement. Unlike in classical (Shannon) information theory, quantum (von Neumann) conditional entropies can be negative when considering quantum entangled systems, a fact related to quantum non-separability. The possibility that negative (virtual) information can be carried by entangled particles suggests a consistent interpretation of quantum informational processes.
引用
@article{arxiv.quant-ph/9512022,
title = {Negative entropy and information in quantum mechanics},
author = {N. J. Cerf and C. Adami},
journal= {arXiv preprint arXiv:quant-ph/9512022},
year = {2009}
}
备注
4 pages RevTeX, 2 figures. Expanded discussion of quantum teleportation and superdense coding, and minor corrections. To appear in Phys. Rev. Lett