A subwavelength Stokes polarimeter on a silicon chip

Abstract

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A subwavelength Stokes polarimeter on a silicon chip

“…Under normal illumination, the nanoantenna scatters part of the incoming radiation into guided optical power. Remarkably, the evanescent tails of the waveguide modes exhibit an intrinsic quantum spin Hall effect (QSHE) of light (4), so the scattering process will be mediated by a strong spin-orbit coupling effect (5). This results in a polarization-sensitive response of the nanoantennas (6) that, unlike in (2,3), does not rely on complex nanoscale shaping of metallic surfaces, which enormously facilitates fabrication.…”