Spin Light Emitting Diode Based on Exciton Fine Structure Tuning in Quantum Dots.
| Autor: | Shumilin AV; Ioffe Institute, 194021 St. Petersburg, Russia.; Complex Matter Department, Jozef Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia., Shamirzaev TS; Rzhanov Institute of Semiconductor Physics, Siberian Branch of the Russian Academy of Sciences, 630090 Novosibirsk, Russia., Smirnov DS; Ioffe Institute, 194021 St. Petersburg, Russia. |
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| Jazyk: | angličtina |
| Zdroj: | Physical review letters [Phys Rev Lett] 2024 Feb 16; Vol. 132 (7), pp. 076202. |
| DOI: | 10.1103/PhysRevLett.132.076202 |
| Abstrakt: | We propose a concept of quantum dot based light emitting diode that produces circularly polarized light without magnetic contacts due to the hyperfine interaction at the crossing of the exciton levels in a weak magnetic field. The electroluminescence circular polarization degree can reach 100%. The concept is compatible with the micropillar cavities, which allows for the generation of single circularly polarized photons. Second order photon correlation function includes information about the nuclear spin dynamics in the quantum dot, and the nuclear spin state can be purified by the quantum measurement backaction. |
| Databáze: | MEDLINE |
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