Spatial entanglement in two-electron atomic systems

被引：50

作者：

Lin, Yen-Chang ^{[1
]}

Lin, Chih-Yuan ^{[1
]}

Ho, Yew Kam ^{[1
]}

机构：

[1] Acad Sinica, Inst Atom & Mol Sci, Taipei 106, Taiwan

来源：

PHYSICAL REVIEW A | 2013年 / 87卷 / 02期

关键词：

Electron wave functions - Helium-like ion - Nuclear charges - Reduced-density matrix - Spatial entanglement - Two-electron atomic systems - Two-electron model atoms - Two-electron systems;

D O I：

10.1103/PhysRevA.87.022316

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Recently, there has been considerable interest in investigating quantum entanglement in two-electron systems, such as two-electron model atoms and quantum dots. In this work, the quantum entanglement of the helium atom and helium-like ions are explored using the two-electron wave functions constructed by the B-spline basis. As a measure of the spatial entanglement, the linear entropy of the reduced density matrix is investigated for the ground state and the singlet excited 1sns(1)S states, with n = 2-10, of the helium atom. The variation of the spatial entanglement with the nuclear charges Z = 2-15 for the helium-like ions is reported. Results are compared with the existing predictions. DOI: 10.1103/PhysRevA.87.022316

引用

页数：5

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