Tunable single photon and two-photon emission in a four-level quantum dot-bimodal cavity system
| Autor: | Chengwang Zhao, Yumin Liu, Xiang Cheng, Zhongyuan Yu, Jingran Liu, Han Ye |
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| Rok vydání: | 2019 |
| Předmět: |
Physics
Quantum Physics Photon Photon statistics Cavity quantum electrodynamics Physics::Optics FOS: Physical sciences 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics Laser 01 natural sciences Single photon emission Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention Two-photon excitation microscopy Correlation function law Quantum dot 0103 physical sciences Atomic physics 010306 general physics 0210 nano-technology Quantum Physics (quant-ph) |
| DOI: | 10.48550/arxiv.1911.00388 |
| Popis: | We investigate the generation of single photons and photon pairs in a cavity quantum electrodynamics system of a four-level quantum dot coupled to bimodal cavity. By tuning frequencies and intensity ratio of the driving lasers, sub-Poissonian and super-Poissonian photon statistics are obtained in each nondegenerate cavity mode respectively. Single photon emission is characterized as zero-delay second-order correlation function g^2(0)~0.15. Photon pair emission under the two-photon resonance excitation is quantified by Mandel parameter as Q~0.04. The mean cavity photon number in both scenarios can maintain large around 0.1. As a result, single photon emission and two-photon emission can be integrated in our proposed system only by tuning the external parameters of the driving lasers. Comment: 6 pages, 5 figures |
| Databáze: | OpenAIRE |
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