Rewritable Binary Recording of the Photon Spin State in Chiral Liquid Crystals

Author(s): Nicolas Bruni, Charles Loussert, Mushegh Rafayelyan, Tetiana Orlova, Delphine Coursault, and Etienne Brasselet We experimentally demonstrate that the spin state (up or down) of circularly polarized light can be reliably encoded as a polar structural state (up or down) in chiral liquid crystals, with high selectivity. This enables a spin-driven, nonvolatile binary liquid crystal memory, which can be optically… [Phys. Rev. Lett. 134, 223804] Published Thu Jun 05, 2025