title: Laser written waveguide photonic quantum circuits.
abstract: We report photonic quantum circuits created using an ultrafast laser processing technique that is rapid, requires no lithographic mask and can be used to create three-dimensional networks of waveguide devices. We have characterized directional couplers--the key functional elements of photonic quantum circuits--and found that they perform as well as lithographically produced waveguide devices. We further demonstrate high-performance interferometers and an important multi-photon quantum interference phenomenon for the first time in integrated optics. This direct-write approach will enable the rapid development of sophisticated quantum optical circuits and their scaling into three-dimensions.
authors: Centre for Ultrahigh bandwidth Devices for Optical Systems, MQ Photonics Research Centre, Department of Physics, Macquarie University, NSW 2109, Australia. graham@science.mq.edu.au
authors: Graham D
authors: GD
authors: Marshall
authors: Alberto
authors: A
authors: Politi
authors: Jonathan C F
authors: JC
authors: Matthews
authors: Peter
authors: P
authors: Dekker
authors: Martin
authors: M
authors: Ams
authors: Michael J
authors: MJ
authors: Withford
authors: Jeremy L
authors: JL
authors: O'Brien