The EPR SYS-405 is AIT's modular platform for quantum mechanics experiments for universities, research centers, and industry. The entire system is built around an electronically stabilized source of entangled photons at 810nm which enables long term operation with high generation rates. The number and quality of the generated photon pairs strongly depends on the used pump laser diode, which can be selected from a number of options. With a stabilized narrow-bandwidth laser diode, a measured coincidence rate of C = 500/(s*mW) at an overall visibility of V>98% can be achieved.

From the source, the photons are transmitted via either free space links (optical telescopes) or via optical fibre to one or two BB84 modules. The free space link sender and receiver telescopes include electronic support for alignment and calibration.

In the BB84 detector modules the photons are continuously analyzed in the {0, 90} and {+45, -45} bases and time-tagged with highest precision. The matching of the corresponding detection events, as well as the classical post-processing (sifting, error correction, privacy amplification) is performed on commercial-off-the-shelf laptops. AIT offers the entire QKD stack software together with its source code (under GPL) and such provides an easy way to the development and testing of new approaches and protocols in QKD post processing.

AIT provides different options for training in operating and carrying out experiments with the EPR SYS-405. All customers may access a web-based bulletin-board and bug-tracking system to resolve software issues. Furthermore, AIT provides training at its facilities in Vienna, or on site in the laboratory of the customer.

The EPR SYS-405 can be configured exactly to your needs by selecting two or more options regarding the following modular building blocks:

  • Pump laser diode
  • Nonlinear Crystal
  • Stablilization
  • fibre coupling or free space optical telescopes
  • Detectors
  • Electronics
  • Post processing PCs
  • Software
  • Training

Pricing varies with the selected components. For details on the options please contact our scientific staff.