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arXiv · 0812.1822

Design of flexible ultrahigh-Q microcavities in diamond-based photonic crystal slabs

Snjezana Tomljenovic-Hanic·Andrew D. Greentree·C. Martijn de Sterke·Steven Prawer
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Abstract

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 $Q ~ 10^7$, are well within what can be achieved ($\Delta n \sim 0.02$). 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 technique to generate cavities around defect centres is achievable, improving prospects for defect-tolerant quantum architectures.

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Snjezana Tomljenovic-Hanic, Andrew D. Greentree, C. Martijn de Sterke, Steven Prawer. 2008-12-10. Design of flexible ultrahigh-Q microcavities in diamond-based photonic crystal slabs. https://doi.org/10.1364/oe.17.006465

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