Zero field entanglement in dipolar coupling spin system at negative temperatures
Quantum Physics
2013-11-15 v1
Abstract
A dipolar coupled spin system can achieve internal thermodynamic equilibrium states at negative absolute temperature. We study analytically and numerically the temperature dependence of the concurrence in a dipolar coupled spin-1/2 system in both non-zero and zero fields and show that, at negative temperatures, entangled states can exist even in zero magnetic field.
Keywords
Cite
@article{arxiv.1309.5536,
title = {Zero field entanglement in dipolar coupling spin system at negative temperatures},
author = {Gregory B. Furman and Victor M. Meerovich and Vladimir L. Sokolovsky},
journal= {arXiv preprint arXiv:1309.5536},
year = {2013}
}
Comments
9 pages, 4 figures International Journal of Quantum Information, 2013