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Visibility of a 220 km Long Deployed Optical Fiber Sagnac Interferometer
Linköping University, Department of Electrical Engineering, Information Coding. Linköping University, Faculty of Science & Engineering.
Linköping University, Department of Electrical Engineering, Information Coding. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0002-8734-2833
Linköping University, Department of Electrical Engineering, Information Coding. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0002-0092-1825
Linköping University, Department of Electrical Engineering, Information Coding. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0002-8234-424X
2025 (English)In: CLEO 2025, Optica Publishing Group, 2025, article id FF114_6Conference paper, Published paper (Other academic)
Abstract [en]

We demonstrate interference of weak coherent states with a visibility of up to 91.8% in a Sagnac interferometer over 219.4 km of deployed fiber, pointing to practical deployment of multi-user twin-field quantum key distribution.
Place, publisher, year, edition, pages
Optica Publishing Group, 2025. article id FF114_6
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URN: urn:nbn:se:liu:diva-222701DOI: 10.1364/cleo_fs.2025.ff114_6Scopus ID: 2-s2.0-105033582489ISBN: 9781957171500 (print)OAI: oai:DiVA.org:liu-222701DiVA, id: diva2:2051762
Conference
CLEO: Fundamental Science 2025, Long Beach, California United States, 4–9 May 2025
Available from: 2026-04-09 Created: 2026-04-09 Last updated: 2026-04-09

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Clason, MartinArgillander, JoakimSpegel-Lexne, DanielXavier, Guilherme B.

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Total: 17 hits
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