Purcell and Collection Efficiency Enhancement of Single NV‐ Center Emission Coupled to an Asymmetric Tamm Structure

The resonant modes associated with engineered photonic structures of different spatial-dimension are essential to obtain bright on-demand single photon sources for quantum technologies. Negatively-charged nitrogen-vacancy (NV-) center in diamond is proposed as an excellent single-photon source at room temperature. possible optical readout spin states makes it a good candidate the spin-photon interface. However, poor light collection, feeble zero-phonon line, low emission rate, and broad phonon-induced limit use NV- centers Here, feasible, easy-to-fabricate, asymmetric Tamm structure coupled enhance rate zero phonon line (ZPL) better collection efficiency presented. shows dual mode one coinciding ZPL wavelength 640 nm. quality factor (Q-factor) 140, which greater than Q-factor conventional hence, improved field intensity localization. authors achieved four times Purcell enhancement five enhanced helps generate photons using improves efficacy