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Opt Express. 2009 Jul 20;17(15):12546-54.

Laser written waveguide photonic quantum circuits.

Author information

1
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

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.

PMID:
19654657
DOI:
10.1364/oe.17.012546

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