High alphabet quantum communication (Conference Presentation)

Rupert Ursin

doi:10.1117/12.2542529

9 March 2020 High alphabet quantum communication (Conference Presentation)

Rupert Ursin

Proceedings Volume 11272, Free-Space Laser Communications XXXII; 112720N (2020) https://doi.org/10.1117/12.2542529
Event: SPIE LASE, 2020, San Francisco, California, United States

Abstract

Quantum entanglement based communication schemes have many advantages. High-dimensional encoding has been shown to improve robustness and channel capacities in secure quantum communications. The transmission of genuine high-dimensional entanglement under real-world atmospheric link conditions, however, is an ongoing experimental challenge. We report on a proof-of-concept experiment in which we, for the first time, use energy-time and polarization hyperentanglement to transmit 4-dimensional entanglement via a 1.2-km-long intra-city free-space link. We discuss how this approach can be adapted for high-dimensional free-space QKD and report on the progress of ongoing experiments.

Conference Presentation

Citation Download Citation

Rupert Ursin "High alphabet quantum communication (Conference Presentation)", Proc. SPIE 11272, Free-Space Laser Communications XXXII, 112720N (9 March 2020); https://doi.org/10.1117/12.2542529

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