Observation of Non-vanishing Optical Helicity in Thermal Radiation from Symmetry-Broken Metasurfaces
X. Wang, T. Sentz, S. Bharadwaj, Y. Wang, L. Qi, and Z. Jacob, “Observation of Non-vanishing Optical Helicity in Thermal Radiation from Symmetry-Broken Metasurfaces”, arXiv, 2022.