Journal
OPTICS EXPRESS
Volume 17, Issue 15, Pages 12546-12554Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.17.012546
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Funding
- Australian Research Council
- Macquarie University
- EPSRC
- QIP IRC
- IARPA
- Leverhulme Trust
- Royal Society
- Engineering and Physical Sciences Research Council [EP/F008023/1, EP/F010524/1] Funding Source: researchfish
- EPSRC [EP/F008023/1, EP/F010524/1] Funding Source: UKRI
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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. (C) 2009 Optical Society of America
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