Thermal entanglement in a two-qubit Heisenberg XXZ spin chain under an inhomogeneous magnetic field
Data(s) |
2005
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Resumo |
The thermal entanglement in a two-qubit Heisenberg XXZ spin chain is investigated under an inhomogeneous magnetic field b. We show that the ground-state entanglement is independent of the interaction of z-component J(z). The thermal entanglement at the fixed temperature can be enhanced when J(z) increases. We strictly show that for any temperature T and J(z), the entanglement is symmetric with respect to zero inhomogeneous magnetic field, and the critical inhomogeneous magnetic field b(c) is independent of J(z). The critical magnetic field B-c increases with the increasing parallel to b parallel to but the maximum entanglement value that the system can arrive at becomes smaller. |
Identificador | |
Idioma(s) |
英语 |
Fonte |
Zhang, GF; Li, SS .Thermal entanglement in a two-qubit Heisenberg XXZ spin chain under an inhomogeneous magnetic field ,PHYSICAL REVIEW A,SEP 2005,72 (3):Art.No.034302 |
Palavras-Chave | #半导体物理 #QUANTUM COMPUTATION |
Tipo |
期刊论文 |