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Title of Journal: Int J Theor Phys

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Abbravation: International Journal of Theoretical Physics

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Springer US

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1572-9575

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The Effect of Impurities in a ThreeQubit Ising Sp

Authors: Jia Liu GuoQing Liu XiaoHong Du
Publish Date: 2011/12/29
Volume: 51, Issue: 5, Pages: 1509-1517
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Abstract

The dynamics of genuine threequbit entanglement in Ising spin model is investigated under the effect of impurities with different sites The analytic expression for the threetangle measurement is obtained Results show that the impurity parameters exert great effect on the entanglement value When the impurity on the boundary sit of the spin chain the positive contribution of the impurity coefficient on the exchange interaction is greater the stay time in the greater entanglement is longer When the impurity sitting in the spin chain the entanglement variation is periodic with the evolution time only at some given impurity coefficient The realization of efficient control of the entanglement by appropriate combinations of the tunable parameters should be possibleThis work was supported by the National Natural Science Foundation of China Grant Nos 11147010 61102162 10874013 Project and the Innovation Found of Inner Mongolia University of Science and Technology Grant Nos 2010NC066 2009NC005 JY2011065

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