Probing spin-orbit interaction via Fano interference
2018; American Institute of Physics; Volume: 113; Issue: 26 Linguagem: Inglês
10.1063/1.5080697
ISSN1520-8842
AutoresDesapogu Rajesh, Sergey Nechayev, Dima Cheskis, Shmuel Sternklar, Yuri Gorodetski,
Tópico(s)Quantum Information and Cryptography
ResumoWe experimentally investigate the behavior of the Fano-like plasmonic resonance lineshape in a simple plasmonic system comprising a subwavelength hole or a particle illuminated by a tightly focused Gaussian beam. We observe that for a small lateral displacement of the scatterer, the k-space distribution of the plasmonic wave exhibits a strong spin-dependent azimuthal variation. We attribute this phenomenon to the sensitive light-plasmon coupling conditions arising due to the specific phase matching requirements. This effect is qualitatively described by a Fano-like interference with a complex coupling factor.
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