Entanglement of a Five-Qubit Heisenberg XX Chain in a Magnetic Field

被引：0

作者：

CAO Min~(1

机构：

来源：

Communications in Theoretical Physics | 2009年 / 51卷 / 05期

基金：

中国国家自然科学基金;

关键词：

entanglement; five-qubit; Heisenberg chain;

D O I：

暂无

中图分类号：

O413 [量子论];

学科分类号：

070201 ;

摘要：

We calculate the eigenvalues and eigenvectors of a five-qubit isotropic Heisenberg model in an externalmagnetic field, and give analytical results for the concurrence of two nearest-neighbor qubits. A magnetic field caneliminate degeneration and change the ground state of the system. Therefore increasing the value of the magnetic fieldcan induce entanglement in a certain range both for the antiferromagnetic and ferromagnetic case.

引用

页码：811 / 814

页数：4

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