Spin-dependent quantum optics in a quantum dot molecule
| العنوان: | Spin-dependent quantum optics in a quantum dot molecule |
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| المؤلفون: | Joel Q. Grim, Sophia E. Economou, Brennan C. Pursley, Daniel Gammon, Bumsu Lee, Allan S. Bracker, Michael K. Yakes, Samuel G. Carter |
| المصدر: | Physical Review B. 100 |
| بيانات النشر: | American Physical Society (APS), 2019. |
| سنة النشر: | 2019 |
| مصطلحات موضوعية: | Physics, Quantum optics, Coherence time, Photon, 02 engineering and technology, 021001 nanoscience & nanotechnology, 01 natural sciences, Resonance fluorescence, Quantum dot, 0103 physical sciences, Emission spectrum, Atomic physics, 010306 general physics, 0210 nano-technology, Hyperfine structure, Coherence (physics) |
| الوصف: | A pair of tunnel-coupled quantum dots has advantages over single dots in tunability and spin coherence, but far less work has been done to measure and understand the quantum optics of this system. In particular, the two-electron singlet-triplet system with one electron in each dot generates an eight-level system in which two-level and four-level double-\ensuremath{\Lambda} systems are coupled only through the hyperfine interaction and other spin relaxation processes. We first measure the emission spectrum under resonant driving with a continuous-wave laser and then perform time-correlated Hanbury Brown-Twiss (HBT) and Hong-Ou-Mandel (HOM) interferometric measurements to examine nonclassical photon properties of spin-flip Raman emission and resonance fluorescence. The shapes of second-order correlation functions $[{g}^{(2)}(\ensuremath{\tau})]$ from HBT are strikingly different between resonance fluorescence and spin-flip Raman emission, reflecting the spin dynamics of the singlet-triplet system. In addition, our two-photon HOM measurements demonstrate a high raw visibility of 0.96, with a coherence time exceeding the radiative lifetime. |
| تدمد: | 2469-9969 2469-9950 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::f4425e0e371117c56132253e40cdbb43 https://doi.org/10.1103/physrevb.100.125438 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi...........f4425e0e371117c56132253e40cdbb43 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 24699969 24699950 |
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