Quantum entangled beams of light enable secure information transfer.
Researchers at the University of Oklahoma have demonstrated the principle of using spatial correlations in quantum entangled beams of light to encode information and enable its secure transmission. The researchers used two entangled beams of light to encode information in the spatial correlations between them, which can only be extracted through joint measurements of the two beams. This approach could enable the secure encoding and transmission of large amounts of information using the spatial properties of light.