Flexible design of ultrahigh-Q microcavities in diamond-based photonic crystal slabs.
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 technique to generate cavities around defect centres is achievable, improving prospects for defect-tolerant quantum architectures.
ARC Centre of Excellence for Ultrahigh-bandwidth Devices for Optical Systems (CUDOS), and School of Physics, University of Sydney, Camperdown, NSW 2006, Australia. snjezana@physics.usyd.edu.au
Snjezana
S
Tomljenovic-Hanic
Andrew D
AD
Greentree
C Martijn
CM
de Sterke
Steven
S
Prawer
D017076:Computer-Aided Design; D003460:Crystallization / Q000379:methods*; D018130:Diamond / Q000737:chemistry*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D012031:Refractometry / Q000295:instrumentation*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D014159:Transducers; D014732:Vibration
D018130:Diamond