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arXiv · 2403.09099

Room temperature quantum emitters in van der Waals {\alpha}-MoO3

Jeonghan Lee·Haiyuan Wang·Keun-Yeol Park·Soonsang Huh·Donghan Kim·Mihyang Yu·Changyoung Kim·Kristian Sommer Thygesen·Jieun Lee
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Abstract

Quantum emitters in solid-state materials are highly promising building blocks for quantum information processing and communication science. Recently, single-photon emission from van der Waals materials has been reported in transition metal dichalcogenides and hexagonal boron nitride, exhibiting the potential to realize photonic quantum technologies in two-dimensional materials. Here, we report the generation of room temperature single-photon emission from exfoliated and thermally annealed single crystals of van der Waals {\alpha}-MoO3. The second-order correlation function measurement displays a clear photon antibunching, while the luminescence intensity exceeds 0.4 Mcts/s and remains stable under laser excitation. The theoretical calculation suggests that an oxygen vacancy defect is a possible candidate for the observed emitters. Together with photostability and brightness, quantum emitters in {\alpha}-MoO3 provide a new avenue to realize photon-based quantum information science in van der Waals materials.

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cond-mat.mtrl-sciphysics.opticsquant-ph

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Jeonghan Lee, Haiyuan Wang, Keun-Yeol Park, Soonsang Huh, Donghan Kim, Mihyang Yu, Changyoung Kim, Kristian Sommer Thygesen, Jieun Lee. 2024-03-14. Room temperature quantum emitters in van der Waals {\alpha}-MoO3. https://doi.org/10.1021/acs.nanolett.4c05594

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