Entanglement beyond subsystems
Quantum Physics
2007-05-23 v1 Strongly Correlated Electrons
Abstract
We present a notion of generalized entanglement which goes beyond the conventional definition based on quantum subsystems. This is accomplished by directly defining entanglement as a property of quantum states relative to a distinguished set of observables singled out by Physics. While recovering standard entanglement as a special case, our notion allows for substantially broader generality and flexibility, being applicable, in particular, to situations where existing tools are not directly useful.
Cite
@article{arxiv.quant-ph/0403044,
title = {Entanglement beyond subsystems},
author = {Lorenza Viola and Howard Barnum and Emanuel Knill and Gerardo Ortiz and Rolando Somma},
journal= {arXiv preprint arXiv:quant-ph/0403044},
year = {2007}
}
Comments
14 pages, no figures. Invited contribution to the Proceedings of the Coding Theory and Quantum Computing Workshop, AMS series in Contemporary Mathematics (2004)