Hoang Thanh Xuan, Leykam Daniel, Kivshar Yuri
Institute of High Performance Computing (IHPC), Agency for Science, Technology and Research (A*STAR), 1 Fusionopolis Way, #16-16 Connexis, Singapore 138632, Republic of Singapore.
Centre for Quantum Technologies, National University of Singapore, 3 Science Drive 2, Singapore 117543, Singapore.
Phys Rev Lett. 2024 Jan 26;132(4):043803. doi: 10.1103/PhysRevLett.132.043803.
We introduce the concept of photonic flatband resonances and demonstrate it for an array of high-index dielectric particles. We employ the multiple Mie scattering theory and demonstrate that both short- and long-range interactions between the resonators are crucial for the emerging collective resonances and their associated photonic flatbands. By examining both near- and far-field characteristics, we uncover how the flatbands emerge due to a fine tuning of resonators' radiation fields, and predict that hybridization of a flatband resonance with an electric hot spot can lead to giant values of the Purcell factor for the electric dipolar emitters.
我们引入了光子平带共振的概念，并通过高折射率介电粒子阵列对其进行了演示。我们采用多重米氏散射理论，证明了谐振器之间的短程和长程相互作用对于新兴的集体共振及其相关的光子平带至关重要。通过研究近场和远场特性，我们揭示了平带是如何由于谐振器辐射场的精细调谐而出现的，并预测平带共振与电热点的杂化可导致电偶极发射体的珀塞尔因子出现巨大值。
