Departamento de Física Téorica de la Materia Condensada and Condensed Matter Physics Center (IFIMAC), Universidad Autónoma de Madrid, E-28049 Madrid, Spain.
Faculty of Science and Engineering, University of Wolverhampton, Wulfruna Street, Wolverhampton WV1 1LY, United Kingdom.
Phys Rev Lett. 2019 Feb 8;122(5):057401. doi: 10.1103/PhysRevLett.122.057401.
We present a combined classical and quantum electrodynamics description of the coupling between two circularly polarized quantum emitters held above a metal surface supporting surface plasmons. Depending on their position and their natural frequency, the emitter-emitter interactions evolve from being reciprocal to nonreciprocal, which makes the system a highly tunable platform for chiral coupling at the nanoscale. By relaxing the stringent material and geometrical constraints for chirality, we explore the interplay between coherent and dissipative coupling mechanisms in the system. Thus, we reveal a quasichiral regime in which its quantum optical properties are governed by its subradiant state, giving rise to extremely sharp spectral features and strong photon correlations.
我们提出了一种经典和量子电动力学的组合描述，用于描述两个圆形偏振量子发射器在支持表面等离激元的金属表面上方的耦合。根据它们的位置和自然频率，发射器-发射器相互作用从互易变为非互易，这使得该系统成为纳米尺度手性耦合的高度可调平台。通过放宽手性的严格材料和几何约束，我们探索了系统中相干和耗散耦合机制之间的相互作用。因此，我们揭示了一个准手性区域，其中它的量子光学性质由其亚辐射状态控制，导致极其尖锐的光谱特征和强烈的光子相关性。
