Photon superbunching in cathodoluminescence of WS2 monolayer

Sergii Morozov; Saskia Fiedler; Leonid Iliushyn; Sergejs Boroviks; Martin Thomaschewski; Jianfang Wang; Timothy J. Booth; Nicolas Stenger; Christian Wolff; N. Asger Mortensen

doi:10.13140/RG.2.2.34835.28968

Photon superbunching in cathodoluminescence of WS2 monolayer

Sergii Morozov^*, Saskia Fiedler, Leonid Iliushyn, Sergejs Boroviks, Martin Thomaschewski, Jianfang Wang, Timothy J. Booth, Nicolas Stenger, Christian Wolff, N. Asger Mortensen

^*Corresponding author for this work

Technical University of Denmark

Research output: Contribution to conference without publisher/journal › Poster › Research

Abstract

We investigate the luminescence properties and photon statistics of a tungsten disulfide (WS2) monolayer under electron beam excitation [1]. We report the first observation of photon bunching in cathodoluminescence (CL) from a WS2 monolayer, achieving g2(0) = 156 ± 16 at the lowest current attainable by our instrument. 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 photon superbunching of g2(0) = 2152 ± 236. This approach to control the electron excitation of excitons in a WS2 monolayer allows for the synchronization of photon emitters in an ensemble, which is important to further advance light information and computing technologies.

Original language	English
Publication date	7. Jun 2024
DOIs	https://doi.org/10.13140/RG.2.2.34835.28968
Publication status	Published - 7. Jun 2024
Event	Polariton Science Conference 2024 - DIAS, Odense, Denmark Duration: 4. Jun 2024 → 7. Jun 2024 https://www.sdu.dk/en/forskning/polima/conference-polariton-science

Conference

Conference	Polariton Science Conference 2024
Location	DIAS
Country/Territory	Denmark
City	Odense
Period	04/06/2024 → 07/06/2024
Internet address	https://www.sdu.dk/en/forskning/polima/conference-polariton-science

Keywords

photon superbunching
cathodoluminescence
electron-beam excitation
transition metal dichalcogenide monolayer
van der Waals heterostructures
hexagonal boron nitride
HBT interferometery

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1 Journal article

Photon superbunching in cathodoluminescence of excitons in WS2 monolayer
Fiedler, S., Morozov, S., Iliushyn, L., Boroviks, S., Thomaschewski, M., Wang, J., Booth, T., Wolff, C. & Mortensen, N. A., Apr 2023, In: 2D Materials. 10, 2, 8 p., 021002.
Research output: Contribution to journal › Journal article › Research › peer-review

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1 Finished

2DCHEX: Tuning emission of charged excitons in two-dimensional transition metal dichalcogenide monolayers
Morozov, S. (Project participant) & Mortensen, N. A. (Project participant)
01/07/2021 → 30/06/2023
Project: EU

Cite this

@conference{dfaca95f86e04af88b0c4bbaf759eb18,

title = "Photon superbunching in cathodoluminescence of WS2 monolayer",

abstract = "We investigate the luminescence properties and photon statistics of a tungsten disulfide (WS2) monolayer under electron beam excitation [1]. We report the first observation of photon bunching in cathodoluminescence (CL) from a WS2 monolayer, achieving g2(0) = 156 ± 16 at the lowest current attainable by our instrument. 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 photon superbunching of g2(0) = 2152 ± 236. This approach to control the electron excitation of excitons in a WS2 monolayer allows for the synchronization of photon emitters in an ensemble, which is important to further advance light information and computing technologies.",

keywords = "photon superbunching, cathodoluminescence, electron-beam excitation, transition metal dichalcogenide monolayer, van der Waals heterostructures, hexagonal boron nitride, HBT interferometery",

author = "Sergii Morozov and Saskia Fiedler and Leonid Iliushyn and Sergejs Boroviks and Martin Thomaschewski and Jianfang Wang and Booth, {Timothy J.} and Nicolas Stenger and Christian Wolff and Mortensen, {N. Asger}",

year = "2024",

month = jun,

day = "7",

doi = "10.13140/RG.2.2.34835.28968",

language = "English",

note = "Polariton Science Conference 2024 ; Conference date: 04-06-2024 Through 07-06-2024",

url = "https://www.sdu.dk/en/forskning/polima/conference-polariton-science",

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TY - CONF

T1 - Photon superbunching in cathodoluminescence of WS2 monolayer

AU - Morozov, Sergii

AU - Fiedler, Saskia

AU - Iliushyn, Leonid

AU - Boroviks, Sergejs

AU - Thomaschewski, Martin

AU - Wang, Jianfang

AU - Booth, Timothy J.

AU - Stenger, Nicolas

AU - Wolff, Christian

AU - Mortensen, N. Asger

PY - 2024/6/7

Y1 - 2024/6/7

N2 - We investigate the luminescence properties and photon statistics of a tungsten disulfide (WS2) monolayer under electron beam excitation [1]. We report the first observation of photon bunching in cathodoluminescence (CL) from a WS2 monolayer, achieving g2(0) = 156 ± 16 at the lowest current attainable by our instrument. 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 photon superbunching of g2(0) = 2152 ± 236. This approach to control the electron excitation of excitons in a WS2 monolayer allows for the synchronization of photon emitters in an ensemble, which is important to further advance light information and computing technologies.

AB - We investigate the luminescence properties and photon statistics of a tungsten disulfide (WS2) monolayer under electron beam excitation [1]. We report the first observation of photon bunching in cathodoluminescence (CL) from a WS2 monolayer, achieving g2(0) = 156 ± 16 at the lowest current attainable by our instrument. 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 photon superbunching of g2(0) = 2152 ± 236. This approach to control the electron excitation of excitons in a WS2 monolayer allows for the synchronization of photon emitters in an ensemble, which is important to further advance light information and computing technologies.

KW - photon superbunching

KW - cathodoluminescence

KW - electron-beam excitation

KW - transition metal dichalcogenide monolayer

KW - van der Waals heterostructures

KW - hexagonal boron nitride

KW - HBT interferometery

U2 - 10.13140/RG.2.2.34835.28968

DO - 10.13140/RG.2.2.34835.28968

M3 - Poster

T2 - Polariton Science Conference 2024

Y2 - 4 June 2024 through 7 June 2024

ER -

Photon superbunching in cathodoluminescence of WS2 monolayer

Abstract

Conference

Keywords

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Related research output

Photon superbunching in cathodoluminescence of excitons in WS2 monolayer

Related projects

2DCHEX: Tuning emission of charged excitons in two-dimensional transition metal dichalcogenide monolayers

Cite this