We demonstrate an integrated source of frequency-entangled photon pairs on a silicon photonics chip. The emitter has a coincidence-to-accidental ratio exceeding 103. We prove entanglement by showing two-photon frequency interference with a visibility of 94.6% ± 1.1%. This result opens the possibility of on-chip integration of frequency-bin sources with modulators and the other active and passive devices available in the silicon photonics platform.
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CorrectionsFederico Andrea Sabattoli, Linda Gianini, Angelica Simbula, Marco Clementi, Antonio Fincato, Frederic Boeuf, Marco Liscidini, Matteo Galli, and Daniele Bajoni, "A silicon source of frequency-bin entangled photons: publisher’s note," Opt. Lett. 48, 867-867 (2023)
8 January 2023: Typographical corrections were made to the title, affiliations, and funding.
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