Large-alphabet quantum key distribution using spatially encoded light
| Autor: | Willemijn Luiten, Pepijn W. H. Pinkse, R. van der Meer, P. Hooijschuur, Tristan Bernhard Horst Tentrup |
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| Přispěvatelé: | Complex Photonic Systems, MESA+ Institute |
| Rok vydání: | 2019 |
| Předmět: |
Physics
Key generation Cybersecurity Photon Hilbert space General Physics and Astronomy Single-photon detection Quantum key distribution Topology Polarization (waves) 01 natural sciences 010305 fluids & plasmas Spatial light encoding symbols.namesake High-dimensional quantum optics 0103 physical sciences Spatial Displacement symbols quantum communication Communication source Alphabet 010306 general physics METIS-310213 |
| Zdroj: | ISSUE=41;TITLE=41st Annual Meeting NNV AMO Lunteren 2017 New journal of physics, 21:123044. IOP Publishing Ltd. Physics@FOM Veldhoven 2015 |
| ISSN: | 1367-2630 |
| DOI: | 10.1088/1367-2630/ab5cbe |
| Popis: | Most quantum key distribution protocols using a two-dimensional basis, such as HV polarization as first proposed by Bennett and Brassard in 1984, are limited to a key generation density of 1 bit per photon. We increase this key density by encoding information in the transverse spatial displacement of the used photons. Employing this higher-dimensional Hilbert space together with modern single-photon-detecting cameras, we demonstrate a proof-of-principle large-alphabet quantum key distribution experiment with 1024 symbols and a shared information between sender and receiver of 7 bit per photon. |
| Databáze: | OpenAIRE |
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