Negative entropy and information in quantum mechanics

Preprint

30 October 1997

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.quant-ph/9512022

Abstract

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.

Keywords

QUANTUM INFORMATIONAL PROCESSES
INFORMATION IN QUANTUM
MECHANICAL INFORMATION
QUANTUM ENTANGLEMENT
INFORMATION THEORY
QUANTUM MECHANICAL
ENTANGLED
ENTROPY

All Related Versions

Version 1, 1995-12-19, ArXiv
Version 2, 1995-12-20, ArXiv
Version 3, 1997-10-30, ArXiv
Published version: Physical Review Letters, 79 (26), 5194.

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