Laser written waveguide photonic quantum circuits
arXiv:0902.4357 · doi:10.1364/OE.17.012546
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.
arXiv comment4 pages, 4 figures. Submitted to Optics Express 04/04/2009, accepted for publication 30/06/09
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