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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Petrov, R. H. | Madrid |
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| Kočí, Jan | Prague |
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| Azam, Siraj |
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| Ali, M. A. |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Thomaschewski, Martin
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Publications (5/5 displayed)
- 2023Photon superbunching in cathodoluminescence of excitons in WS 2 monolayercitations
- 2023Photon superbunching in cathodoluminescence of excitons in WS2 monolayercitations
- 2023Photon superbunching in cathodoluminescence of excitons in WS2 monolayercitations
- 2018Single-mode to multi-mode crossover in thin-load polymethyl methacrylate plasmonic waveguides
- 2014The complex dispersion relation of surface plasmon polaritons at gold/para-hexaphenylene interfacescitations
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article
Photon superbunching in cathodoluminescence of excitons in WS2 monolayer
Abstract
<p>Cathodoluminescence spectroscopy in conjunction with second-order auto-correlation measurements of g 2 ( τ ) allows to extensively study the synchronization of photon emitters in low-dimensional structures. Co-existing excitons in two-dimensional transition metal dichalcogenide monolayers provide a great source of identical photon emitters which can be simultaneously excited by an electron. Here, we demonstrate large photon bunching with g 2 ( 0 ) up to 156 ± 16 of a tungsten disulfide monolayer (WS<sub>2</sub>), exhibiting a strong dependence on the electron-beam current. To further improve the excitation synchronization and the electron-emitter interaction, we show exemplary that the careful selection of a simple and compact geometry—a thin, monocrystalline gold nanodisk—can be used to realize a record-high bunching g 2 ( 0 ) of up to 2152 ± 236 . This approach to control the electron excitation of excitons in a WS<sub>2</sub> monolayer allows for the synchronization of photon emitters in an ensemble, which is important to further advance light information and computing technologies.</p>