Deterministic integration of quantum emitters and optical cavities in a van der Waals crystal
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arXiv
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| Main Authors: | , , , , , , , , |
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| Format: | Preprint |
| Published: |
2026
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| _version_ | 1866909983386370048 |
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| author | Liddle-Wesolowski, James Schaeper, Otto Cranwell Coste, Nathan Whitefield, Benjamin Williams, Evan Zeng, Helen Zhi Jie Kianinia, Mehran Zalogina, Anastasiia Aharonovich, Igor |
| author_facet | Liddle-Wesolowski, James Schaeper, Otto Cranwell Coste, Nathan Whitefield, Benjamin Williams, Evan Zeng, Helen Zhi Jie Kianinia, Mehran Zalogina, Anastasiia Aharonovich, Igor |
| contents | Single-photon emitters in hexagonal boron nitride (hBN) combine bright optical emission with optically addressable spin states, offering a promising platform for integrated quantum photonics. However, their stochastic creation and spectral variability have prevented deterministic integration with photonic cavities. Here we demonstrate a fabrication protocol that enables precise, deterministic coupling of pre-selected visible emitters to circular Bragg grating (CBG) cavities in hBN. By patterning etched alignment markers and performing prefabrication confocal mapping, we locate emitters with sub-micron accuracy and design cavity geometries matched to their zero-phonon line wavelengths. The resulting devices show enhanced emission and reliable spectral alignment between emitter and cavity mode. This work establishes a deterministic cavity-emitter integration scheme in a van der Waals material and provides a scalable route towards on-chip quantum photonic and spin-based platforms using hBN. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2601_03803 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Deterministic integration of quantum emitters and optical cavities in a van der Waals crystal Liddle-Wesolowski, James Schaeper, Otto Cranwell Coste, Nathan Whitefield, Benjamin Williams, Evan Zeng, Helen Zhi Jie Kianinia, Mehran Zalogina, Anastasiia Aharonovich, Igor Optics Single-photon emitters in hexagonal boron nitride (hBN) combine bright optical emission with optically addressable spin states, offering a promising platform for integrated quantum photonics. However, their stochastic creation and spectral variability have prevented deterministic integration with photonic cavities. Here we demonstrate a fabrication protocol that enables precise, deterministic coupling of pre-selected visible emitters to circular Bragg grating (CBG) cavities in hBN. By patterning etched alignment markers and performing prefabrication confocal mapping, we locate emitters with sub-micron accuracy and design cavity geometries matched to their zero-phonon line wavelengths. The resulting devices show enhanced emission and reliable spectral alignment between emitter and cavity mode. This work establishes a deterministic cavity-emitter integration scheme in a van der Waals material and provides a scalable route towards on-chip quantum photonic and spin-based platforms using hBN. |
| title | Deterministic integration of quantum emitters and optical cavities in a van der Waals crystal |
| topic | Optics |
| url | https://arxiv.org/abs/2601.03803 |