论文标题
Kerker条件，以提高与介电元面的单个发射极的发射速率和方向性
Kerker condition for enhancing emission rate and directivity of single emitter coupled to dielectric metasurfaces
论文作者
论文摘要
Metasurfaces能够控制经典和非经典的光状态，即使在单个发射极的水平上，也能够实现受控的发射。在这里，我们揭示了Kerker条件引起的发射率提高，并从集成在介电元面内的单个发射极的强大方向性由硅纳米磁盘组成。模拟和分析计算证明了Kerker条件，其单向光散射是由电偶极子，环形偶极子和磁性四极杆之间的建设性干扰演变而来的。结果证明了光学状态的空间依赖性增强的局部密度，从而响应局部场强度。在氮 - 呈现中心的零声子线上实现了400次的速率，具有出色的排放方向性和收集效率。结果对按需单光子生成，自旋光子界面，多体相互作用和强耦合具有影响。
Metasurfaces have the ability to control classical and non-classical states of light to achieve controlled emission even at the level of single emitter. Here, we unveil the Kerker condition induced emission rate enhancement with strong directivity from a single emitter integrated within a dielectric metasurface consists of silicon nano-disks. The simulation and analytical calculations attest the Kerker condition with unidirectional light scattering evolved by the constructive interference between electric dipole, toroidal dipole, and the magnetic quadrupole. The results evince spatially-dependent enhanced local density of optical states which reciprocates localized field intensity. The rate enhancement of 400 times is achieved at zero phonon line of nitrogen-vacancy center with superior emission directivity and collection efficiency. The results have implications in on-demand single photon generation, spin-photon interface, many-body interactions, and strong coupling.
