title: Nanophotonic integrated circuits from nanoresonators grown on silicon.
abstract: Harnessing light with photonic circuits promises to catalyse powerful new technologies much like electronic circuits have in the past. Analogous to Moore's law, complexity and functionality of photonic integrated circuits depend on device size and performance scale. Semiconductor nanostructures offer an attractive approach to miniaturize photonics. However, shrinking photonics has come at great cost to performance, and assembling such devices into functional photonic circuits has remained an unfulfilled feat. Here we demonstrate an on-chip optical link constructed from InGaAs nanoresonators grown directly on a silicon substrate. Using nanoresonators, we show a complete toolkit of circuit elements including light emitters, photodetectors and a photovoltaic power supply. Devices operate with gigahertz bandwidths while consuming subpicojoule energy per bit, vastly eclipsing performance of prior nanostructure-based optoelectronics. Additionally, electrically driven stimulated emission from an as-grown nanostructure is presented for the first time. These results reveal a roadmap towards future ultradense nanophotonic integrated circuits.
authors.affiliation: 1] Department of Electrical Engineering and Computer Sciences, University of California at Berkeley, Berkeley, California 94720, USA [2].
authors.forename: Roger
authors.initials: R
authors.lastname: Chen
authors.affiliation: 1] Department of Electrical Engineering and Computer Sciences, University of California at Berkeley, Berkeley, California 94720, USA [2].
authors.forename: Kar Wei
authors.initials: KW
authors.lastname: Ng
authors.affiliation: 1] Department of Electrical Engineering and Computer Sciences, University of California at Berkeley, Berkeley, California 94720, USA [2].
authors.forename: Wai Son
authors.initials: WS
authors.lastname: Ko
authors.affiliation: Department of Electrical Engineering and Computer Sciences, University of California at Berkeley, Berkeley, California 94720, USA.
authors.forename: Devang
authors.initials: D
authors.lastname: Parekh
authors.affiliation: Department of Electrical Engineering and Computer Sciences, University of California at Berkeley, Berkeley, California 94720, USA.
authors.forename: Fanglu
authors.initials: F
authors.lastname: Lu
authors.affiliation: Department of Electrical Engineering and Computer Sciences, University of California at Berkeley, Berkeley, California 94720, USA.
authors.forename: Thai-Truong D
authors.initials: TT
authors.lastname: Tran
authors.affiliation: Department of Electrical Engineering and Computer Sciences, University of California at Berkeley, Berkeley, California 94720, USA.
authors.forename: Kun
authors.initials: K
authors.lastname: Li
authors.affiliation: Department of Electrical Engineering and Computer Sciences, University of California at Berkeley, Berkeley, California 94720, USA.
authors.forename: Connie
authors.initials: C
authors.lastname: Chang-Hasnain