TY - JOUR AB - The Bell basis is a distinctive set of maximally entangled two-particle quantum states that forms the foundation for many quantum protocols such as teleportation, dense coding, and entanglement swapping. While the generation, manipulation, and measurement of two-level quantum states are well understood, the same is not true in higher dimensions. Here we present the experimental generation of a complete set of Bell states in a four-dimensional Hilbert space, comprising 16 orthogonal entangled Bell-like states encoded in the orbital angular momentum of photons. The states are created by the application of generalized high-dimensional Pauli gates on an initial entangled state. Our results pave the way for the application of high-dimensional quantum states in complex quantum protocols such as quantum dense coding. AU - Wang, Feiran AU - Erhard, Manuel AU - Babazadeh, Amin AU - Malik, Mehul AU - Krenn, Mario AU - Zeilinger, Anton DA - 2017/11/28/ DO - 10.1364/OPTICA.4.001462 ET - 2023/03/14/ IS - 12 JF - Optica PY - 2017 SE - 2017/10/01/ SP - 1462-1467 TI - Generation of the complete four-dimensional Bell basis UR - https://www.osapublishing.org/optica/abstract.cfm?uri=optica-4-12-1462 VL - 4 ER -