title: High quality entanglement on a chip-based frequency comb.
abstract: We report an efficient energy-time entangled photon-pair source based on four-wave mixing in a CMOS-compatible silicon photonics ring resonator. Thanks to suitable optimization, the source shows a large spectral brightness of 400 pairs of entangled photons /s/MHz for 500 μW pump power, compatible with standard telecom dense wavelength division multiplexers. We demonstrate high-purity energy-time entanglement, i.e., free of photonic noise, with near perfect raw visibilities (> 98%) between various channel pairs in the telecom C-band. Such a compact source stands as a path towards more complex quantum photonic circuits dedicated to quantum communication systems.
authors.forename: F
authors.initials: F
authors.lastname: Mazeas
authors.forename: M
authors.initials: M
authors.lastname: Traetta
authors.forename: M
authors.initials: M
authors.lastname: Bentivegna
authors.forename: F
authors.initials: F
authors.lastname: Kaiser
authors.forename: D
authors.initials: D
authors.lastname: Aktas
authors.forename: W
authors.initials: W
authors.lastname: Zhang
authors.forename: C A
authors.initials: CA
authors.lastname: Ramos
authors.forename: L A
authors.initials: LA
authors.lastname: Ngah
authors.forename: T
authors.initials: T
authors.lastname: Lunghi
authors.forename: É
authors.initials: É
authors.lastname: Picholle
authors.forename: N
authors.initials: N
authors.lastname: Belabas-Plougonven
authors.forename: X
authors.initials: X
authors.lastname: Le Roux
authors.forename: É
authors.initials: É
authors.lastname: Cassan
authors.forename: D
authors.initials: D
authors.lastname: Marris-Morini
authors.forename: L
authors.initials: L
authors.lastname: Vivien
authors.forename: G
authors.initials: G
authors.lastname: Sauder
authors.forename: L
authors.initials: L
authors.lastname: Labonté
authors.forename: S
authors.initials: S
authors.lastname: Tanzilli