Conference paper
High-dimensional quantum communication with twisted photons propagating in a fiber link
Centre of Excellence for Silicon Photonics for Optical Communications, Centers, Technical University of Denmark1
Ultra-fast Optical Communication, Department of Photonics Engineering, Technical University of Denmark2
Department of Photonics Engineering, Technical University of Denmark3
Fiber Optics, Devices and Non-linear Effects, Department of Photonics Engineering, Technical University of Denmark4
Nanophotonic Devices, Department of Photonics Engineering, Technical University of Denmark5
OFS Fitel Denmark ApS6
Boston University7
Quantum communication (QC) represents a key enabler for many quantum applications. However, low information rates and short propagation distances, limit the development of this field and its practical applications. High-dimensional (Hi-D) QC can address these challenges enhancing the information rate and the systems error tolerance.
We transmit, for the first time ever, Hi-D quantum states prepared in four orbital angular momentum (OAM) modes in a 1.2 km long OAM-carrying fiber. Furthermore, we successfully implement a real-time decoy-state Hi-D QKD protocol, and demonstrate the highest secret key rate and longest transmission distance of OAM-QKD presented to date
Language: | English |
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Year: | 2018 |
Proceedings: | 18th Asian Quantum Information Science Conference |
Types: | Conference paper |
ORCIDs: | Cozzolino, Daniele , Bacco, Davide , Ingerslev, Kasper , Ding, Yunhong , Dalgaard, Kjeld , Galili, Michael , Rottwitt, Karsten and Oxenløwe, Leif Katsuo |