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arXiv · 1309.5536

Zero field entanglement in dipolar coupling spin system at negative temperatures

Gregory B. Furman·Victor M. Meerovich·Vladimir L. Sokolovsky
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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.

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Gregory B. Furman, Victor M. Meerovich, Vladimir L. Sokolovsky. 2013-09-21. Zero field entanglement in dipolar coupling spin system at negative temperatures. https://arxiv.org/abs/1309.5536

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