{
  "abstract": "Interference of optical signals in free-space channels requires optical receivers to support many spatial modes due to atmospheric turbulence, typically necessitating adaptive optics systems. Angle-compensated interferometers offer a passive alternative, making them particularly attractive for time-bin encoded signals with delays on the order of one nanosecond. Here, we demonstrate a multimode angle-compensated interferometer design that achieves a high interference visibility for spatially multimode beams with large time bin separations. The interference of the multimode beams is enabled using an imaging multi-pass Herriott cell that enables a very long path separation with a small form-factor. The design is tested using both numerical ray-tracing simulations and proof-of-principle demonstrations. We create a prototype interferometer with a path length difference of 12ns and determine that it maintains a high interference visibility with a large field-of-view of $0.4^{\\circ}$.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2608.13399",
  "author_total": 5,
  "authors": [
    {
      "name": "Ramy Tannous"
    },
    {
      "name": "Stéphane Vinet"
    },
    {
      "name": "Kaylee Sherk"
    },
    {
      "name": "Kimia Mohammadi"
    },
    {
      "name": "Thomas Jennewein"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/31bstdgqghvk2.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2608.13399",
  "fulltext_url": null,
  "id": "31bstdgqghvk2",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2608.13399",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "physics.optics"
    ],
    [
      "arxiv",
      "quant-ph"
    ],
    [
      "openalex",
      "2208|Optical Wireless Communication Technologies"
    ]
  ],
  "openalex": "W7203443263",
  "pdf_url": "https://arxiv.org/pdf/2608.13399",
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-04",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/31bstdgqghvk2.ris",
  "sources": [
    {
      "first_seen": "2026-11-05T15:20:56Z",
      "native_id": "2608.13399",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2608.13399"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:physics.optics",
      "subfield": "optics-photonics"
    },
    {
      "field": "physics",
      "origin": "arxiv:quant-ph",
      "subfield": "quantum"
    }
  ],
  "title": "Multimode Angle-Compensated Interferometer with Long Time-Bin Delay Using a Multi-Pass Herriott Cell",
  "title_text": "Multimode Angle-Compensated Interferometer with Long Time-Bin Delay Using a Multi-Pass Herriott Cell",
  "type": "preprint",
  "updated_at": "2026-11-05T15:20:56Z",
  "url": "https://research.draconitic.com/paper/31bstdgqghvk2",
  "venue": "arXiv",
  "versions": []
}