Laser written waveguide photonic quantum circuits

Details Laser written waveguide photonic quantum circuits Laser written waveguide photonic quantum circuits

2009-02-25

arxiv.org/abs/0902.4357v2

Optics Express, Vol. 17, No. 15, pp. 12546-12554, 20 July 2009

Physics

Quantum Physics

4 pages, 4 figures. Submitted to Optics Express 04/04/2009, accepted for publication 30/06/09

Scientific paper

10.1364/OE.17.012546

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.

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