High-dimensional quantum communication with twisted photons propagating in a fiber link

Daniele Cozzolino, Davide Bacco, Beatrice da Lio, Kasper Ingerslev, Yunhong Ding, Kjeld Dalgaard, P. Kristensen, Michael Galili, Karsten Rottwitt, Siddharth Ramachandran, Leif Katsuo Oxenløwe

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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
Original languageEnglish
Title of host publicationProceedings of 18th Asian Quantum Information Science Conference
Number of pages3
Publication date2018
Publication statusPublished - 2018
Event18th Asian Quantum Information Science Conference - Nagoya Daigaku, Nagoya, Japan
Duration: 8 Sept 201812 Sept 2018
Conference number: 18


Conference18th Asian Quantum Information Science Conference
LocationNagoya Daigaku


  • Quantum Communications
  • Orbital Angular Momentum
  • Quantum Key Distribution
  • High-Dimensional quantum states


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