Tripathi, A.Zalogina, A.Liao, J.Wurdack, M.Estrecho, E.Zhou, J.Jin, D.Kruk, S.S.Kivshar, Y.2023-04-062023-04-062023Nano Letters, 2023; 23(6):2228-22321530-69841530-6992https://hdl.handle.net/2440/137849We demonstrate the effect of spin-momentum locking of upconversion photoluminescence emitted from rareearth doped nanocrystals coupled to a phase-gradient dielectric metasurface. We observe different directionalities for left and right circular polarized light and associate this experimental observation with the photonic Rashba effect realized for upconverted photoluminescence that is manifested in the spin-dependent splitting of emitted light in the momentum space.en© 2023 American Chemical SocietymetasurfacesphotoluminescenceRashba effectupconvertion nanoparticlesJournal article10.1021/acs.nanolett.2c048612023-04-06638454Zalogina, A. [0000-0003-3956-0585]