Journal article

Flexible design of ultrahigh-Q microcavities in diamond-based photonic crystal slabs

Snjezana Tomljenovic-Hanic, Andrew D Greentree, C Martijn de Sterke, Steven Prawer



We design extremely flexible ultrahigh-Q diamond-based double-heterostructure photonic crystal slab cavities by modifying the refractive index of the diamond. The refractive index changes needed for ultrahigh-Q cavities with Q approximately 10(7), are well within what can be achieved (Delta n approximately 0.02). The cavity modes have relatively small volumes V<2 (lambda/n)(3), making them ideal for cavity quantum electro-dynamic applications. Importantly for realistic fabrication, our design is flexible because the range of parameters, cavity length and the index changes, that enables an ultrahigh-Q is quite broad. Furthermore as the index modification is post-processed, an efficient techni..

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Awarded by Australian Research Council Queen Elizabeth II Fellowship

Funding Acknowledgements

The authors thank R. Kalish and M. Draganski for helpful discussions. This work was produced with the assistance of the Australian Research Council (ARC) under the ARC Centres of Excellence Program and by an award under the Merit Allocation Scheme on the National Facility of the Australian Partnership for Advanced Computing. CUDOS (the Centre for Ultrahigh- bandwidth Devices for Optical Systems) is an ARC Centre of Excellence. A. D. G. is the recipient of an Australian Research Council Queen Elizabeth II Fellowship (project number DP0880466). A. D. G. and S. P. are supported by the Australian Research Council, the Australian Government, International Science Linkages program the Department of Education Science and Technology under the International Science Linkages scheme, and the EU 6th Framework under the EQUIND collaboration.