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arXiv · 2601.12521

Zero-phonon line emission of single photon emitters in helium-ion treated MoS$_2$

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 W. Holleitner
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Abstract

We explore the zero-phonon line of single photon emitters in helium-ion treated monolayer MoS$_2$, 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.

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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 W. Holleitner. 2026-01-18. Zero-phonon line emission of single photon emitters in helium-ion treated MoS$_2$. https://doi.org/10.1002/qute.202501013

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