Overcoming noise in entanglement distribution through high‐dimensional encoding
17:30 - 17:50
Sebastian Ecker, Frédéric Bouchard, Lukas Bulla, Florian Brandt, Oskar Kohout, Fabian Steinlechner, Robert Fickler, Mehul Malik, Yelena Guryanova, Rupert Ursin and Marcus Huber The distribution of single photons over long distances is a cornerstone of practical quantum communication. However, both loss across the link and background photons limit the channel distance and capacity. By utilizing high-dimensional entanglement in spatiotemporal properties of photon pairs we are able to overcome levels of noise which are prohibitive for qubits to be transmitted. We identify two pathways to noise resilience based on increasing the resolution of the state space and using additional measurement bases in high dimensions. These pathways are showcased in an experiment employing energy-time entanglement and another one utilizing entanglement in the orbital angular momentum.
