Tailoring polarization in WSe2 quantum emitters through deterministic strain engineering

Athanasios Paralikis; Claudia Piccinini; Abdulmalik A. Madigawa; Pietro Metuh; Luca Vannucci; Niels Gregersen; Battulga Munkhbat

doi:10.1038/s41699-024-00497-2

Tailoring polarization in WSe₂ quantum emitters through deterministic strain engineering

Athanasios Paralikis, Claudia Piccinini, Abdulmalik A. Madigawa, Pietro Metuh, Luca Vannucci, Niels Gregersen, Battulga Munkhbat^*

^*Corresponding author for this work

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Abstract

Quantum emitters in transition metal dichalcogenides (TMDs) have recently emerged as a promising platform for generating single photons for optical quantum information processing. In this work, we present an approach for deterministically controlling the polarization of fabricated quantum emitters in a tungsten diselenide (WSe₂) monolayer. We employ novel nanopillar geometries with long and sharp tips to induce a controlled directional strain in the monolayer, and we report on fabricated WSe₂ emitters producing single photons with a high degree of polarization (99 ± 4%) and high purity (g⁽²⁾(0) = 0.030 ± 0.025). Our work paves the way for the deterministic integration of TMD-based quantum emitters for future photonic quantum technologies.

Original language	English
Article number	59
Journal	npj 2D Materials and Applications
Volume	8
Issue number	1
Number of pages	8
ISSN	2397-7132
DOIs	https://doi.org/10.1038/s41699-024-00497-2
Publication status	Published - Dec 2024

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abstract = "Quantum emitters in transition metal dichalcogenides (TMDs) have recently emerged as a promising platform for generating single photons for optical quantum information processing. In this work, we present an approach for deterministically controlling the polarization of fabricated quantum emitters in a tungsten diselenide (WSe2) monolayer. We employ novel nanopillar geometries with long and sharp tips to induce a controlled directional strain in the monolayer, and we report on fabricated WSe2 emitters producing single photons with a high degree of polarization (99 ± 4%) and high purity (g(2)(0) = 0.030 ± 0.025). Our work paves the way for the deterministic integration of TMD-based quantum emitters for future photonic quantum technologies.",

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AU - Paralikis, Athanasios

AU - Piccinini, Claudia

AU - Madigawa, Abdulmalik A.

AU - Metuh, Pietro

AU - Vannucci, Luca

AU - Gregersen, Niels

AU - Munkhbat, Battulga

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AB - Quantum emitters in transition metal dichalcogenides (TMDs) have recently emerged as a promising platform for generating single photons for optical quantum information processing. In this work, we present an approach for deterministically controlling the polarization of fabricated quantum emitters in a tungsten diselenide (WSe2) monolayer. We employ novel nanopillar geometries with long and sharp tips to induce a controlled directional strain in the monolayer, and we report on fabricated WSe2 emitters producing single photons with a high degree of polarization (99 ± 4%) and high purity (g(2)(0) = 0.030 ± 0.025). Our work paves the way for the deterministic integration of TMD-based quantum emitters for future photonic quantum technologies.

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