Figure 2: Nanofibre-guided quasi-linearly polarized basis modes.
From: Quantum state-controlled directional spontaneous emission of photons into a nanophotonic waveguide
All quantities are calculated for running-wave fields with a wavelength of 852nm and a 250 nm-radius silica fibre and are plotted in the plane transverse to the nanofibre axis. The orientation of the main polarization p=x is indicated by a green double arrow. The two alternative positions of the atoms are indicated by small crosses. (a) Intensity distribution, normalized to the maximal intensity at the nanofibre surface. A significant fraction of the guided optical power propagates outside the nanofibre, allowing one to efficiently interface atoms with the nanofibre-guided light field. The azimuthal variation of the intensity distribution is apparent. (b) Polarization overlaps, 
, ξπ and 
, for the specified propagation direction d=±z of the nanofibre-guided modes. The local quantization axis is chosen along eϕ. The plots also apply to the p=y modes when rotated by π/2.
