Tuning exciton energy and fine-structure splitting in single InAs quantum dots by applying uniaxial stress | Zendy

Dan Su | Zendy; Xiuming Dou | Zendy; Xuefei Wu | Zendy; Yongping Liao | Zendy; Pengyu Zhou | Zendy; Kun Ding | Zendy; Haiqiao Ni | Zendy; Zhichuan Niu | Zendy; Haijun Zhu | Zendy; Desheng Jiang | Zendy; Baoquan Sun | Zendy

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Tuning exciton energy and fine-structure splitting in single InAs quantum dots by applying uniaxial stress

Author(s) -

Dan Su,

Xiuming Dou,

Xuefei Wu,

Yongping Liao,

Pengyu Zhou,

Kun Ding,

Haiqiao Ni,

Zhichuan Niu,

Haijun Zhu,

Desheng Jiang,

Baoquan Sun

Publication year - 2016

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.4946850

Subject(s) - biexciton , exciton , quantum dot , binding energy , fine structure , materials science , condensed matter physics , stress (linguistics) , photoluminescence , molecular physics , atomic physics , optoelectronics , physics , linguistics , philosophy

Exciton and biexciton emission energies as well as excitonic fine-structure splitting (FSS) in single InAs/GaAs quantum dots (QDs) have been continuously tuned in situ in an optical cryostat using a developed uniaxial stress device. With increasing tensile stress, the red shift of excitonic emission is up to 5 nm; FSS decreases firstly and then increases monotonically, reaching a minimum value of approximately 10 μeV; biexciton binding energy decreases from 460 to 106 μeV. This technique provides a simple and convenient means to tune QD structural symmetry, exciton energy and biexciton binding energy and can be used for generating entangled and indistinguishable photons

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