Zero-Phonon Line Emission of Single Photon Emitters in Helium-Ion Treated MoS2

Katja Barthelmi; Tomer Amit; Mirco Troue; Lukas Sigl; Alexander Musta; Tim Duka; Samuel Gyger; Val Zwiller; Matthias Florian; Michael Lorke; Takashi Taniguchi; Kenji Watanabe; Christoph Kastl; Jonathan Finley; Sivan Refaely-Abramson; Alexander Holleitner

doi:10.1002/qute.202501013

Zero-Phonon Line Emission of Single Photon Emitters in Helium-Ion Treated MoS₂

Katja Barthelmi
, Tomer Amit
, Mirco Troue
, Lukas Sigl
, Alexander Musta
, Tim Duka
, Samuel Gyger
, Val Zwiller
, Matthias Florian
, Michael Lorke
, Takashi Taniguchi
, Kenji Watanabe
, Christoph Kastl
, Jonathan Finley
, Sivan Refaely-Abramson
, Alexander Holleitner

Research output: Contribution to journal › Article › peer-review

Abstract

We explore the zero-phonon line of single photon emitters in helium-ion treated monolayer MoS₂, which are currently understood in terms of single sulfur-site vacancies. By comparing the linewidths of the zero-phonon line as extracted directly from optical spectra with values inferred from the first-order autocorrelation function of the photoluminescence, we quantify bounds of the homogeneous broadening and of phonon-assisted contributions. The results are discussed in terms of both the independent boson model and ab-initio results as computed from GW and Bethe–Salpeter equation approximations.

Original language	English
Article number	e01013
Journal	Advanced Quantum Technologies
Volume	9
Issue number	2
DOIs	https://doi.org/10.1002/qute.202501013
State	Published - Feb 2026

Keywords

2D materials
homogeneous linewidth
quantum emitters
zero-phonon line

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10.1002/qute.202501013

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Barthelmi, K., Amit, T., Troue, M., Sigl, L., Musta, A., Duka, T., Gyger, S., Zwiller, V., Florian, M., Lorke, M., Taniguchi, T., Watanabe, K., Kastl, C., Finley, J., Refaely-Abramson, S., & Holleitner, A. (2026). Zero-Phonon Line Emission of Single Photon Emitters in Helium-Ion Treated MoS₂. Advanced Quantum Technologies, 9(2), Article e01013. https://doi.org/10.1002/qute.202501013

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title = "Zero-Phonon Line Emission of Single Photon Emitters in Helium-Ion Treated MoS2",

abstract = "We explore the zero-phonon line of single photon emitters in helium-ion treated monolayer MoS2, which are currently understood in terms of single sulfur-site vacancies. By comparing the linewidths of the zero-phonon line as extracted directly from optical spectra with values inferred from the first-order autocorrelation function of the photoluminescence, we quantify bounds of the homogeneous broadening and of phonon-assisted contributions. The results are discussed in terms of both the independent boson model and ab-initio results as computed from GW and Bethe–Salpeter equation approximations.",

keywords = "2D materials, homogeneous linewidth, quantum emitters, zero-phonon line",

author = "Katja Barthelmi and Tomer Amit and Mirco Troue and Lukas Sigl and Alexander Musta and Tim Duka and Samuel Gyger and Val Zwiller and Matthias Florian and Michael Lorke and Takashi Taniguchi and Kenji Watanabe and Christoph Kastl and Jonathan Finley and Sivan Refaely-Abramson and Alexander Holleitner",

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doi = "10.1002/qute.202501013",

language = "English",

volume = "9",

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T1 - Zero-Phonon Line Emission of Single Photon Emitters in Helium-Ion Treated MoS2

AU - Barthelmi, Katja

AU - Amit, Tomer

AU - Troue, Mirco

AU - Sigl, Lukas

AU - Musta, Alexander

AU - Duka, Tim

AU - Gyger, Samuel

AU - Zwiller, Val

AU - Florian, Matthias

AU - Lorke, Michael

AU - Taniguchi, Takashi

AU - Watanabe, Kenji

AU - Kastl, Christoph

AU - Finley, Jonathan

AU - Refaely-Abramson, Sivan

AU - Holleitner, Alexander

PY - 2026/2

Y1 - 2026/2

N2 - We explore the zero-phonon line of single photon emitters in helium-ion treated monolayer MoS2, which are currently understood in terms of single sulfur-site vacancies. By comparing the linewidths of the zero-phonon line as extracted directly from optical spectra with values inferred from the first-order autocorrelation function of the photoluminescence, we quantify bounds of the homogeneous broadening and of phonon-assisted contributions. The results are discussed in terms of both the independent boson model and ab-initio results as computed from GW and Bethe–Salpeter equation approximations.

AB - We explore the zero-phonon line of single photon emitters in helium-ion treated monolayer MoS2, which are currently understood in terms of single sulfur-site vacancies. By comparing the linewidths of the zero-phonon line as extracted directly from optical spectra with values inferred from the first-order autocorrelation function of the photoluminescence, we quantify bounds of the homogeneous broadening and of phonon-assisted contributions. The results are discussed in terms of both the independent boson model and ab-initio results as computed from GW and Bethe–Salpeter equation approximations.

KW - 2D materials

KW - homogeneous linewidth

KW - quantum emitters

KW - zero-phonon line

UR - https://www.scopus.com/pages/publications/105031163166

U2 - 10.1002/qute.202501013

DO - 10.1002/qute.202501013

M3 - Article

AN - SCOPUS:105031163166

SN - 2511-9044

VL - 9

JO - Advanced Quantum Technologies

JF - Advanced Quantum Technologies

IS - 2

M1 - e01013

ER -

Zero-Phonon Line Emission of Single Photon Emitters in Helium-Ion Treated MoS₂

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Keywords

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