Quantum Technologies GmbH

Engineer

• Design, build, align, and operate optical setups for polarization-entangled photon sources and entanglement-based QKD systems, including free-space and fiber-based implementations.
• Perform detailed measurements of source brightness, entanglement quality, loss, timing, and stability; analyze results and iteratively improve system performance and robustness.
• Take ownership of laboratory experiments, including optical alignment, calibration of detectors and electronics, troubleshooting of experimental issues, and documentation of setups and procedures.
• Develop and maintain experiment control, data acquisition, and analysis software (e.g. for measurements, calibration routines, and long-term stability tests).
• Work closely with software, electronics, and systems engineers to integrate optical subsystems into full QKD nodes and network deployments.
• Contribute to the exploration and prototyping of next-generation components and concepts, including improvements to entangled photon sources and optical subsystems.

Quantum Optics Engineer – Entanglement-based QKD Systems