Multidimensional Quantum Communications with Legacy Fibers

In a new “twist” on quantum communication using optical fiber, researchers from the University of Witwatersrand (Wits) and Huazhang University of Science and Technology (HUST) have demonstrated that multiple quantum patterns of twisted light can be transmitted across a conventional fiber link that supports only one light pattern. The research could open the way to secure transport of quantum data across fiber networks, using multiple dimensions of light.