• Technical Conference:  15 – 19 March 2026
  • Exhibition: 17 – 19 March 2026
  • Los Angeles Convention Center, Los Angeles, California, USA
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Poster / Demo

Characterizing a Metropolitan Fiber Link With Heralded Single Photons From an Electronic-Photonic Chip (Th2A.61)

Presenter: Ely Eastman, Northwestern University

We characterize single photon transmission through a ∼ 48 km underground
fiber link. Using an integrated source, we measure delay variations in the timing correlations
between the photon-pairs of 40 ps over 90 minutes, compared to 200 ps in a 50 km spool
kept in the laboratory, showing the suitability of buried fiber for quantum networks.

Authors:Anirudh Ramesh, Northwestern University / Ely Eastman, Northwestern University / Danielius Kramnik, UC Berkeley / Imbert Wang, Boston University / Dorde Gluhovic, Boston University / Milos Popovic, UC Berkeley / Vladimir Stojanovic, UC Berkeley / Prem Kumar, Northwestern University


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