Scientists compute with light inside hair-thin optical fiber

https://phys.org/news/2024-01-scientists-hair-thin-optical-fiber.html

"encode optical circuits inside optical fiber... much information on 1 photon, on its spatial structure, temporal structure, on its color, simultaneously, manipulating quantum entanglement... entanglement plays an important role in many quantum technologies, such as correcting errors inside a quantum computer and enabling the most secure types of quantum encryption... unhackable communications networks and ultrafast quantum computers"