Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Preprint |
| Published: |
2026
|
| Subjects: | |
| Online Access: | https://arxiv.org/abs/2605.08425 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866917474831695872 |
|---|---|
| author | Sorensen, Daniel W. Stevens, Martin J. Shalm, Lynden K. Reddy, Dileep V. |
| author_facet | Sorensen, Daniel W. Stevens, Martin J. Shalm, Lynden K. Reddy, Dileep V. |
| contents | We implement a time-of-flight imaging technique utilizing a differential-readout SNSPD to spatially resolve detection events in a fiber-coupled detector platform. We measure the spatial detection profiles for ultra-high numerical aperture fiber, standard single-mode fiber, and thermally-expanded core fiber (mode-field diameters 4.1μm, 10.4μm, 30μm respectively) in an active area surrounded by an all-dielectric optical stack designed for near-unity detection efficiency. We see no beam divergence in all but the smallest fiber optic modes. This contradicts previously-held beliefs that beam divergence during the detection process necessitates activate areas much larger than coupled optical modes, opening new paths toward smaller and better-optimized detectors. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2605_08425 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | In-Situ Measurement of Beam Divergence in a High Efficiency SNSPD Platform Sorensen, Daniel W. Stevens, Martin J. Shalm, Lynden K. Reddy, Dileep V. Quantum Physics We implement a time-of-flight imaging technique utilizing a differential-readout SNSPD to spatially resolve detection events in a fiber-coupled detector platform. We measure the spatial detection profiles for ultra-high numerical aperture fiber, standard single-mode fiber, and thermally-expanded core fiber (mode-field diameters 4.1μm, 10.4μm, 30μm respectively) in an active area surrounded by an all-dielectric optical stack designed for near-unity detection efficiency. We see no beam divergence in all but the smallest fiber optic modes. This contradicts previously-held beliefs that beam divergence during the detection process necessitates activate areas much larger than coupled optical modes, opening new paths toward smaller and better-optimized detectors. |
| title | In-Situ Measurement of Beam Divergence in a High Efficiency SNSPD Platform |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2605.08425 |