Zero field entanglement in dipolar coupling spin system at negative temperature

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

doi:10.1142/S0219749913500500

Zero field entanglement in dipolar coupling spin system at negative temperature

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

Department of Physics

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

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 nonzero and zero fields and show that, at negative temperatures, entangled states can exist even in zero magnetic field.

Original language	English
Article number	1350050
Journal	International Journal of Quantum Information
Volume	11
Issue number	5
DOIs	https://doi.org/10.1142/S0219749913500500
State	Published - 1 Jan 2013

Keywords

Dipole-dipole interactions
Entanglement
Negative temperature
Zero field

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1142/S0219749913500500

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title = "Zero field entanglement in dipolar coupling spin system at negative temperature",

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 nonzero and zero fields and show that, at negative temperatures, entangled states can exist even in zero magnetic field.",

keywords = "Dipole-dipole interactions, Entanglement, Negative temperature, Zero field",

author = "Furman, {Gregory B.} and Meerovich, {Victor M.} and Sokolovsky, {Vladimir L.}",

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AU - Furman, Gregory B.

AU - Meerovich, Victor M.

AU - Sokolovsky, Vladimir L.

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N2 - 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 nonzero and zero fields and show that, at negative temperatures, entangled states can exist even in zero magnetic field.

AB - 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 nonzero and zero fields and show that, at negative temperatures, entangled states can exist even in zero magnetic field.

KW - Dipole-dipole interactions

KW - Entanglement

KW - Negative temperature

KW - Zero field

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U2 - 10.1142/S0219749913500500

DO - 10.1142/S0219749913500500

M3 - Article

AN - SCOPUS:84887875269

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JO - International Journal of Quantum Information

JF - International Journal of Quantum Information

IS - 5

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ER -

Zero field entanglement in dipolar coupling spin system at negative temperature

Abstract

Keywords

ASJC Scopus subject areas

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