Quantum Entanglement Controllers


"Self-calibrating electronic controller for satellite quantum entanglement source" is the new project funded by the National Centre for Research and Development. This R&D project is the first step towards ensuring constant high-quality generation of entangled photon pairs for satellite QKD missions of the future.

The main functions of the electronic controller will be:

  • control of piezoelectric actuators and stepper motors for opto-mechanical assembly,
  • PPKTP crystal temperature regulation down to ± 0.5 °C accuracy,
  • photon counters and coincidence detection in TTL/NIM standard,
  • measurment of Bell’s parameter and state fidelity, as feedback information on controller’s performance, allowing to initiate quantum entanglement source self-calibration.
Quantum Entanglement Controllers