Modeling of radiative emission from shallow color centers in single crystalline diamond

Abstract

Optically active defects in diamond are widely used as bright single-photon sources for quantum sensing, computing, and communication. For many applications, it is useful to place the emitter close to the diamond surface, where the radiative properties of the emitter are strongly modified by its dielectric environment. It is well-known that the radiative power from an electric dipole decreases as the emitter approaches an interface with a lower-index dielectric, leading to an increase in the radiative lifetime. For emitters in crystalline solids, modeling of this effect needs to take into account the crystal orientation and direction of the surface cut, which can greatly impact the emission characteristics. In this paper, we provide a framework for analyzing the emission rates of shallow (<100 nm) defects, in which optical transitions are derived from electric dipoles in a plane perpendicular to their spin axis. We present our calculations for the depth-dependent radiative lifetime for color centers in (100)-, (110)-, and (111)-cut diamond, which can be extended to other vacancy defects in diamond.

References in corpus (9)

• Dynamic strain-mediated coupling of a single diamond spin to a mechanical resonator
• Chip-scale nanofabrication of single spins and spin arrays in diamond
• Engineering shallow spins in diamond with nitrogen delta-doping
• Nanoscale NMR Spectroscopy and Imaging of Multiple Nuclear Species
• All-optical thermometry and the thermal properties of the optically detected spin resonances of the NV center in nano-diamond
• Polarization-selective excitation of N-V centers in diamond
• State-selective intersystem crossing in nitrogen-vacancy centers
• (111)-oriented, single crystal diamond tips for nanoscale scanning probe imaging of out-of-plane magnetic fields
• Proximal nitrogen reduces the fluorescence quantum yield of nitrogen-vacancy centres in diamond