Hyperfine mediated triplet-singlet transition probability in a double-quantum-dot system: Analogy with the double-slit experiment

被引：6

作者：

Dominguez, Fernando ^{[1
]}

Platero, Gloria ^{[1
]}

机构：

[1] CSIC, Inst Ciencia Mat Madrid, E-28049 Madrid, Spain

来源：

PHYSICAL REVIEW B | 2009年 / 80卷 / 20期

关键词：

COMPUTATION;

D O I：

10.1103/PhysRevB.80.201301

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We apply an elementary measurement scheme to calculate the electronic triplet-singlet transition mediated by hyperfine interaction in a double-quantum dot. We show how the local character of the hyperfine interaction and the nuclear back-action process (flip-flop) are crucial to cancel destructive interferences of the triplet-singlet transition probability. It is precisely this cancellation that differentiates the hyperfine interaction from an anisotropic magnetic field which mixes the triplet and the singlet eigenstates.

引用

页数：4

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