A slab two-dimensional photonic crystal in diamond is
being considered for quantum information processing. In view of the low
refractive index of diamond, the question whether a high Q cavity is
achievable has to be addressed. Here, various geometrical designs of single
point defects and double heterostructures for the formation of high Q
nanocavities in diamond are modeled. The highest value of vertical quality
factor was achieved in double heterostructures. This result seems to
be significant for further consideration of photonic crystals in diamond for
quantum electrodynamics applications.
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