2018/07/15 by A. V. Poshakinskiy, A. V. Poshakinskiy, A. N. Poddubny +1 · 1 citation
Materials Science · Physics and Astronomy · #Chemical and Physical Properties of Materials #Mechanical and Optical Resonators #Topological Materials and Phenomena #cond-mat.mes-hall #physics.optics
paper · pdf · doi:10.1103/physrevx.9.011008
published as Phys. Rev. X 9, 011008 (2019) · 7 pages, 7 figures, 1 table + Methods
arxiv created 2018/07/15 · openalex created_date 2018/08/03 · openalex publication_date 2019/01/15 · arxiv updated 2019/01/23 · openalex updated_date 2026/07/28
Tunable directional scattering is of paramount importance for operation of antennas, routing of light, and design of topologically protected optical states. For visible light scattered on a nanoparticle the directionality could be provided by the Kerker effect, exploiting the interference of electric and magnetic dipole emission patterns. However, magnetic optical resonances in small sub-100-nm particles are relativistically weak. Here, we predict inelastic scattering with the unexpectedly strong tunable directivity up to 5.25 driven by a trembling of small particle without any magnetic resonance. The proposed optomechanical Kerker effect originates from the vibration-induced multipole conversion. We also put forward an optomechanical spin Hall effect, the inelastic polarization-dependent directional scattering. Our results uncover an intrinsically multipolar nature of the interaction between light and mechanical motion. They apply to a variety of systems from cold atoms to two-dimensional materials to superconducting qubits and can be instructive to engineer chiral optomechanical coupling.