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Distribution of Genuine High-dimensional Entanglement Over 10.2 Km of Noisy Metropolitan Atmosphere by Bulla, Lukas; Hjorth, Kristian; Kohout, Oskar; Lang, Jan; Ecker, Sebastian; Neumann, Sebastian P.; Bittermann, Julius; Kindler, Robert; Huber, Marcus; Bohmann, Martin; Ursin, Rupert; Pivoluska, Matej is a scholarly article available to read on EtoBox.

What is Distribution of Genuine High-dimensional Entanglement Over 10.2 Km of Noisy Metropolitan Atmosphere about?

In a recent quantum key distribution experiment, high-dimensional protocols were used to show an improved noise resistance over a 10.2 km free-space channel. One of the unresolved questions in this context is whether the communicating parties actually shared genuine high-dimensional entanglement. In this letter we introduce an improved discretisation and entanglement certification scheme for high-dimensional time-bin setups and apply it to the data obtained during the experiment. Our analysis answers the aforementioned question affirmatively and thus the experiment constitutes the first transmission of genuine high-dimensional entanglement in a single degree of freedom over a long-range free-space channel.

Author

Bulla, Lukas; Hjorth, Kristian; Kohout, Oskar; Lang, Jan; Ecker, Sebastian; Neumann, Sebastian P.; Bittermann, Julius; Kindler, Robert; Huber, Marcus; Bohmann, Martin; Ursin, Rupert; Pivoluska, Matej

Published

2023

Language

EN