Emission of circularly polarized light by a linear dipole

• DOI: 10.1126/sciadv.aav7588
• Publication Date: 2019-06-28T23:19:06Z
• Authors: Martin Neugebauer; Peter Banzer; Sergey Nechayev
• Keywords: Nanophotonics

Controlling the polarization state and propagation direction of photons is a fundamental prerequisite for many nanophotonic devices precursor future on-chip communication, where emission properties individual emitters are particularly relevant. Here, we report on partially circularly polarized by linear dipole. The underlying effect linked to near-field part angular spectrum dipole, it occurs in any type dipole emitter, ranging from atoms quantum dots molecules dipole-like antennas. We experimentally observe far-field transformation at planar dielectric interface numerically demonstrate utility this phenomenon coupling light paths crossing waveguides.