Executive Summary : | Ultra-bright, room temperature stable quantum sources of light, emitting single photons on demand, have potential applications in various quantum technologies. Solid-state emitters based on color centers in diamond and silicon carbide are promising candidates for these sources. However, efficient photon collection from these emitters is challenging due to the large refractive index/momentum mismatch between the host material and the surrounding medium. Various approaches, such as optical micro-cavities, resonant photonic structures, or plasmonic nanoantennas, have been employed to enhance the spontaneous emission from these emitters. However, these schemes have drawbacks, such as limited linewidths in photonic resonators or large metal absorption losses in plasmonic structures. Recently, hyperbolic metamaterials (HMM) with alternating planar metal-dielectric layers have been proposed to provide broadband Purcell enhancement to quantum emitter's spontaneous emission. These HMM structures exhibit anisotropic permittivity tensor with metallic properties along one direction and dielectric properties in the other directions. This anisotropy allows the embedded dipoles to emit into its high-k modes, leading to emission directionality and a large increase in the local density of optical states. However, the issue of high quantum efficiencies in HMM structures has been a subject of debate. This project aims to study the coupling of solid-state single photon sources with HMM/antenna resonators, which will provide large FE and high directivity to the quantum emitters emission over a broad wavelength range. This resonator system is expected to tune the temporal and spatial behavior of single-photon emission from a quantum emitter. |