Deterministic coupling of delta-doped nitrogen vacancy centers to a nanobeam photonic crystal cavity

Citation:

Lee, Jonathan C, David O Bracher, Shanying Cui, Kenichi Ohno, Claire A McLellan, Xingyu Zhang, Paolo Andrich, et al. 2014. “Deterministic coupling of delta-doped nitrogen vacancy centers to a nanobeam photonic crystal cavity.” Applied Physics Letters 105 (26).

Abstract:

The negatively charged nitrogen vacancy center (NV) in diamond has generated significant interest as a platform for quantum information processing and sensing in the solid state. For most applications, high quality optical cavities are required to enhance the NV zero-phonon line (ZPL) emission. An outstanding challenge in maximizing the degree of NV-cavity coupling is the deterministic placement of NVs within the cavity. Here, we report photonic crystal nanobeamcavities coupled to NVs incorporated by a delta-doping technique that allows nanometer-scale vertical positioning of the emitters. We demonstrate cavities with Q up to ∼24 000 and mode volume V ∼ 0.47(λ/n)3 as well as resonant enhancement of the ZPL of an NV ensemble with Purcell factor of ∼20. Our fabrication technique provides a first step towards deterministic NV-cavity coupling using spatial control of the emitters.

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Last updated on 07/12/2015