Bulletin of the American Physical Society
APS April Meeting 2019
Volume 64, Number 3
Saturday–Tuesday, April 13–16, 2019; Denver, Colorado
Session Y14: Detector R&D III
1:30 PM–3:18 PM,
Tuesday, April 16, 2019
Sheraton
Room: Plaza Court 3
Sponsoring
Unit:
DPF
Chair: Young-Kee Kim
Abstract: Y14.00005 : Ultrastrong coupling of CdZnS/ZnS quantum dots and breathing plasmons in Aluminum metal-insulator-metal nanocavities in near-ultraviolet spectrum*
2:18 PM–2:30 PM
Presenter:
Li Li
(nankai university)
Author:
Li Li
(nankai university)
Abstract: Strong coupling between excitons of quantum dots and plasmons in nanocavites can be realized at room temperature due to the strong confinement of the plasmon fields, which offers building blocks for quantum information systems or ultralow-power switches and lasers. However, most of previous strong coupling effect were realized by the interaction between exctions and bright plasmon modes in visible range. In this work, by using cathodoluminescence, ultrastrong coupling with Rabi splitting above 1 eV between breathing plasmons in Aluminum metal-insulator-metal (MIM) cavity and excited state of CdZnS/ZnS quantum dots was reported in near-UV spectrum. Analytic analysis and full-wave electromagnetic simulations provide the evidence for the strong coupling and confirm the hybridization of the QDs exciton and LSP breathing mode. This study opens the way for new emerging applications based on strongly coupled light-matter states all over the visible region down to ultra-violet frequencies.
*This work was supported by the Program for the National Key R&D Program of China (2017YFA0305100, 2017YFA0303800), the National Natural Science Foundation of China (91750204, 11774185, 61674011, 11504184, 61775106, 11711530205).
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