Quantum Key Distribution in Daylight with an Adjustable Spatial Filter

Andrej Kržič; Andrej Kržič; Nico Döll; Uday Chandrashekara; Christopher Spiess; Christopher Spiess; Sakshi Sharma; Sakshi Sharma; Matthias Goy; Fabian Steinlechner; Fabian Steinlechner

doi:10.1364/QUANTUM.2023.QM3B.7

Optica Quantum 2.0 Conference and Exhibition
Technical Digest Series (Optica Publishing Group, 2023),
paper QM3B.7
•https://doi.org/10.1364/QUANTUM.2023.QM3B.7

Quantum Key Distribution in Daylight with an Adjustable Spatial Filter

Andrej Kržič, Nico Döll, Uday Chandrashekara, Christopher Spiess, Sakshi Sharma, Matthias Goy, and Fabian Steinlechner

Quantum 2.0 2023

Denver, Colorado United States
18–22 June 2023
ISBN: 978-1-957171-27-2

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Quantum Cryptography (QM3B)

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A. Kržič, N. Döll, U. Chandrashekara, C. Spiess, S. Sharma, M. Goy, and F. Steinlechner, "Quantum Key Distribution in Daylight with an Adjustable Spatial Filter," in Optica Quantum 2.0 Conference and Exhibition, Technical Digest Series (Optica Publishing Group, 2023), paper QM3B.7.

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Abstract

Quantum key distribution (QKD) remains extremely challenging in daylight. We developed an adjustable spatial filter and demonstrated kbps-rate entanglement-based QKD over 1.7 km in direct sunlight. We investigated its potential to further optimize system performance.

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