Practical Quantum Key Distribution with Polarization Entangled Photons

Andreas Poppe, Alessandro Fedrizzi, Thomas Lorünser, Oliver Maurhardt, Rupert Ursin, Hannes Böhm, Momtchil Peev, Martin Suda, Christian Kurtsiefer, Harald Weinfurter, Thomas Jennewein, Anton Zeilinger

Publikation: Beitrag in FachzeitschriftArtikelBegutachtung


We present an entangled-state quantum cryptography system that operated for the First time in a real-world application scenario. The füll key generation protocol was performed in real-time between two distributed embedded hardware devices, which were connected by 1.45 km of optical fiber, installed for this experiment in the Vienna sewage system. The generated quantum key was imtnediately handed over and used by a secure comlnunication application.
Seiten (von - bis)7
FachzeitschriftOptics Express
PublikationsstatusVeröffentlicht - 2004

Research Field

  • Nicht definiert


  • Quantum cryptography
  • quantum key distribution
  • entangled photons
  • BB84
  • QBER
  • optical fiber


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