Tuning exciton energy and fine-structure splitting in single InAs quantum dots by applying uniaxial stress
| Autor: | Haijun Zhu, Xuefei Wu, Desheng Jiang, Xiuming Dou, Peng-Yu Zhou, Kun Ding, Yongping Liao, Zhichuan Niu, Haiqiao Ni, Baoquan Sun, Dan Su |
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| Rok vydání: | 2016 |
| Předmět: |
Condensed Matter::Quantum Gases
Physics Photon Condensed matter physics Condensed Matter::Other Exciton Binding energy General Physics and Astronomy 02 engineering and technology Quantum entanglement Condensed Matter::Mesoscopic Systems and Quantum Hall Effect 021001 nanoscience & nanotechnology 01 natural sciences lcsh:QC1-999 Stress (mechanics) Condensed Matter::Materials Science Quantum dot 0103 physical sciences Fine structure 010306 general physics 0210 nano-technology lcsh:Physics Biexciton |
| Zdroj: | AIP Advances, Vol 6, Iss 4, Pp 045204-045204-5 (2016) |
| ISSN: | 2158-3226 |
| DOI: | 10.1063/1.4946850 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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