Jacqui Romero, associate professor at the University of Queensland and expert in qudit systems, visited on 6.2. our group to see how we harvest our strong quantum-dot-based nonlinearity to generate single- and entangled-photon states. In her seminar, she introduced us to qudit research, with emphasis on her favorite multi-dimensional qubit system: Laguerre-Gaussian modes.
She showed the development her team is driving with this platform, including scaling up its number of encoding modes (now 17-dit) and realization of high-dimensional programable gates. The exciting activities are now being transferred on chip architecture optimized for qudit applications using inverse design. Seeing the performance of the TE demultiplexer, we can expect more interesting results to come soon.
