Renowned researcher, Pan Jianwei, lead a team of physicists from the University of Science and Technology of China with others from Alibaba’s Quantum Computing Laboratory. The research demonstrated entanglement of 6 photons, creating 18 qubits. The entanglements exploited three degrees of freedom encompassing their polarization, orbital angular momentum, and path. This nearly doubles the previous record of 10 entangled qubits.
The original work is found at Cornell University Library [PDF]…