A silicon source of frequency-bin entangled photons

Sabattoli, Federico AndreaGianini, LindaSimbula, AngelicaClementi, MarcoFincato, AntonioBoeuf, FredericLiscidini, MarcoGalli, MatteoBajoni, Daniele2023-02-272023-02-272023-02-272022-12-0110.1364/OL.471241https://infoscience.epfl.ch/handle/20.500.14299/195251WOS:000926187200018We demonstrate an integrated source of frequency-entangled photon pairs on a silicon photonics chip. The emitter has a coincidence-to-accidental ratio exceeding 10(3). 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. (c) 2022 Optica Publishing GroupOpticsOpticsquantum statesgenerationA silicon source of frequency-bin entangled photonstext::journal::journal article::research article