Erbium-implanted WS2 flakes with room-temperature photon emission at telecom wavelengths
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arXiv
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| Main Authors: | , , , , , , |
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| Format: | Preprint |
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2025
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| author | García-Arellano, Guadalupe Morales, Gabriel I. López Shotan, Zav Kumar, Raman Murdin, Ben Dreyer, Cyrus E. Meriles, Carlos A. |
| author_facet | García-Arellano, Guadalupe Morales, Gabriel I. López Shotan, Zav Kumar, Raman Murdin, Ben Dreyer, Cyrus E. Meriles, Carlos A. |
| contents | Optically addressable spin impurities in crystals along with device engineering provide an attractive route to realizing quantum technologies in the solid state, but reconciling disparate emitter and host material constraints for a given target application is often challenging. Rare-earth ions in two-dimensional (2D) materials could mitigate this problem given the atomic-like transitions of the emitters and the versatile nature of van der Waals systems. Here we combine ion implantation, confocal microscopy, and ab-initio calculations to examine the photon emission of Er-doped WS2 flakes. Optical spectroscopy reveals narrow, long-lived photo-luminescence lines in the telecom band, which we activate after low-temperature thermal annealing. Spectroscopic and polarization-selective measurements show a uniform response across the ensemble, while the fluorescence brightness remains mostly unchanged with temperature, suggesting non-radiative relaxation channels are inefficient. Our results create opportunities for novel solid state devices coupling 2D-hosted, telecom-band emitters to photonic heterostructures separately optimized for photon manipulation. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_07746 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Erbium-implanted WS2 flakes with room-temperature photon emission at telecom wavelengths García-Arellano, Guadalupe Morales, Gabriel I. López Shotan, Zav Kumar, Raman Murdin, Ben Dreyer, Cyrus E. Meriles, Carlos A. Mesoscale and Nanoscale Physics Optically addressable spin impurities in crystals along with device engineering provide an attractive route to realizing quantum technologies in the solid state, but reconciling disparate emitter and host material constraints for a given target application is often challenging. Rare-earth ions in two-dimensional (2D) materials could mitigate this problem given the atomic-like transitions of the emitters and the versatile nature of van der Waals systems. Here we combine ion implantation, confocal microscopy, and ab-initio calculations to examine the photon emission of Er-doped WS2 flakes. Optical spectroscopy reveals narrow, long-lived photo-luminescence lines in the telecom band, which we activate after low-temperature thermal annealing. Spectroscopic and polarization-selective measurements show a uniform response across the ensemble, while the fluorescence brightness remains mostly unchanged with temperature, suggesting non-radiative relaxation channels are inefficient. Our results create opportunities for novel solid state devices coupling 2D-hosted, telecom-band emitters to photonic heterostructures separately optimized for photon manipulation. |
| title | Erbium-implanted WS2 flakes with room-temperature photon emission at telecom wavelengths |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2506.07746 |