Subwavelength plasmonic and magnetic resonators to control photons and emitters
Controlling how photons are emitted, absorbed and redirected on the nanoscale is of great interest for quantum information, microscopy and nanoscale light sources. Nanophotonics increasingly explores the solutions that electrical engineers use to control RF waves using broadband antennas, which are very different from traditional cavity QED approaches. We explore how plasmonic and metamaterial scatterers allow to transpose RF antenna concepts to optics and quantum optics. Our research unravels how a resonant response to the magnetic field of light, combined with plasmonic resonances, gives rise to nanoscatterers and sources with surprising properties, in terms of directionality, polarization, and chirality.