Generating -states of surface plasmon-polariton pairs with a nanoparticle
arXiv:2002.05268 · doi:10.1103/PhysRevB.109.245416
Abstract
We consider a generation of two-particle quantum states in the process of spontaneous parametric down-conversion of light by a dielectric nanoparticle with response. As a particular example, we study the generation of surface plasmon-polariton pairs with a nanoparticle located at the silver-air interface. We show that for certain excitation geometries, -states of surface plasmon-polariton pairs could be obtained. The effect can be physically interpreted as a result of quantum interference between pairs of induced sources, each emitting either signal or idler plasmon. We then relate the resulting -pattern to the general symmetry properties of dyadic Green's function of a dipole emitter exciting surface waves. It renders the considered effect as a general way towards a robust generation of -states of surface waves using spontaneous parametric down-conversion in nanoparticles.
arXiv comment8 pages, 5 figures
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