Effect of Mechanical Strain on the Optical Properties of Quantum Dots: Controlling Exciton Shape, Orientation, and Phase with a Mechanical Strain

被引：45

作者：

Bryant, Garnett W. ^{[1
,2
]}

Zielinski, M. ^{[3
]}

Malkova, Natalia ^{[1
,2
]}

Sims, James ^{[4
]}

Jaskolski, W. ^{[3
]}

Aizpurua, Javier ^{[5
]}

机构：

[1] NIST, Atom Phys Div, Gaithersburg, MD 20899 USA

[2] NIST, Joint Quantum Inst, Gaithersburg, MD 20899 USA

[3] Inst Fizyki UMK, PL-87100 Torun, Poland

[4] NIST, Informat Technol Lab, Gaithersburg, MD 20899 USA

[5] CSIC UPV EHU, Ctr Mixto Fis Mat, Donostia San Sebastian 20018, Spain

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 105卷 / 06期

关键词：

STORAGE;

D O I：

10.1103/PhysRevLett.105.067404

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We show how a nanomechanical strain can be used to dynamically reengineer the optics of quantum dots, giving a tool to manipulate mechanoexciton shape, orientation, fine structure splitting, and optical transitions, transfer carriers between dots, and interact qubits for quantum processing. Most importantly, a nanomechanical strain reengineers both the magnitude and phase of the exciton exchange coupling to tune exchange splittings, change the phase of spin mixing, and rotate the polarization of mechanoexcitons, providing phase and energy control of excitons.

引用

页数：4

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