Dynamical Entanglement
Quantum Physics
2020-11-02 v2
Abstract
Unlike the entanglement of quantum states, very little is known about the entanglement of bipartite channels, called dynamical entanglement. Here we work with the partial transpose of a superchannel, and use it to define computable measures of dynamical entanglement, such as the negativity. We show that a version of it, the max-logarithmic negativity, represents the exact asymptotic dynamical entanglement cost. We discover a family of dynamical entanglement measures that provide necessary and sufficient conditions for bipartite channel simulation under local operations and classical communication and under operations with positive partial transpose.
Cite
@article{arxiv.2009.12304,
title = {Dynamical Entanglement},
author = {Gilad Gour and Carlo Maria Scandolo},
journal= {arXiv preprint arXiv:2009.12304},
year = {2020}
}
Comments
6+1 pages, 3 figures. Short version of arXiv:1907.02552, close to published version