title: Silicon-chip source of bright photon pairs.
abstract: Integrated quantum photonics relies critically on the purity, scalability, integrability, and flexibility of a photon source to support diverse quantum functionalities on a single chip. Here we report a chip-scale photon-pair source on the silicon-on-insulator platform that utilizes dramatic cavity-enhanced four-wave mixing in a high-Q silicon microdisk resonator. The device is able to produce high-quality photon pairs at different wavelengths with a high spectral brightness of 6.24×10(7) pairs/s/mW(2)/GHz and photon-pair correlation with a coincidence-to-accidental ratio of 1386 ± 278 while pumped with a continuous-wave laser. The superior performance, together with the structural compactness and CMOS compatibility, opens up a great avenue towards quantum silicon photonics with capability of multi-channel parallel information processing for both integrated quantum computing and long-haul quantum communication.
authors.forename: Wei C
authors.initials: WC
authors.lastname: Jiang
authors.forename: Xiyuan
authors.initials: X
authors.lastname: Lu
authors.forename: Jidong
authors.initials: J
authors.lastname: Zhang
authors.forename: Oskar
authors.initials: O
authors.lastname: Painter
authors.forename: Qiang
authors.initials: Q
authors.lastname: Lin