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Quantum key distribution systems and combination with other systems

The quantum key distribution (QKD) system AIT QKD EPR-SYS-405 is available as a standard prototype for research and teaching.

Technical data:

  • Implementation of EPR protocol
  • AIT QKD protocol stack
  • Wavelength 810 nm
  • Range of optical transmission 0 - 5 km
  • Transmission range without optical fibre with telescope in the dark approx. 0 - 500 m
  • Operating temperature 10-40 °C
  • Guaranteed key generation rate at distance 0 m min. 1kbit/s
  • Key generation rate at a distance of 5 km min. 0.2 kbit/s

The AIT technology is also available in combination with “PrimeSign”, a solution provided by Datentechnik Innovation. In this configuration, QKD is designed to secure communication between a hardware security module and the Web front-end.

Two other quantum key distribution systems are currently under development:

  • a quantum key distribution system for PON structures – developed as part of the LQNet project, funded by the Vienna Science and Technology Fund (WWFT);
  • a quantum key distribution system which can be operated without the need for a dedicated optical fibre link in parallel to DWDM (Dense Wavelength Division Multiplexing) communication – developed as part of the QKD (Telko) project, funded by the Austrian Research Promotion Agency (FFG).

AIT is also working on combining the key distribution systems with a high-security encryption box, which is a prerequisite for the development of a complete communication encryption system for industry.

In addition to these technological developments our experts are also carrying out market analyses and technical studies on ground-to-satellite quantum key distribution in cooperation with ESA.