Quantum states and knowledge: Between pure states and density matrices
Quantum Physics
2018-11-15 v1
Abstract
In this note I will present a subtle interplay between density matrices and the knowledge about their preparation, and I will argue that there is a need to consider a new type of quantum state, in between pure states and density matrices.
Keywords
Cite
@article{arxiv.1811.05472,
title = {Quantum states and knowledge: Between pure states and density matrices},
author = {Sandu Popescu},
journal= {arXiv preprint arXiv:1811.05472},
year = {2018}
}