Voltage control of electron-nuclear spin correlation time in a single quantum dot

被引：12

作者：

Nilsson, J. ^{[1
]}

Bouet, L. ^{[2
]}

Bennett, A. J. ^{[1
]}

Amand, T. ^{[2
]}

Stevenson, R. M. ^{[1
]}

Farrer, I. ^{[3
]}

Ritchie, D. A. ^{[3
]}

Kunz, S. ^{[2
]}

Marie, X. ^{[2
]}

Shields, A. J. ^{[1
]}

Urbaszek, B. ^{[2
]}

机构：

[1] Toshiba Res Europe Ltd, Cambridge Res Lab, Cambridge CB4 0GZ, England

[2] Univ Toulouse, INSA CNRS UPS, LPCNO, F-31077 Toulouse, France

[3] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England

来源：

PHYSICAL REVIEW B | 2013年 / 88卷 / 08期

关键词：

ENTANGLEMENT; STATES;

D O I：

10.1103/PhysRevB.88.085306

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We demonstrate bias control of the efficiency of the hyperfine coupling between a single electron in an InAs quantum dot and the surrounding nuclear spins monitored through the positively charged exciton X+ emission. In applied longitudinal magnetic fields, we vary simultaneously the correlation time of the hyperfine interaction and the nuclear spin relaxation time and thereby the amplitude of the achieved dynamic nuclear polarization under optical pumping conditions. In applied transverse magnetic fields, a change in the applied bias allows a switch from the anomalous Hanle effect to the standard electron spin depolarization curves.

引用

页数：6

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