About the position

We are looking for a
Physicist / Research Engineer
to join the Quantum Communications Laboratory at
ITEFI-CSIC (Madrid)
and work on the development of experimental
Quantum Key Distribution (QKD)
and free-space quantum communication systems.

You will join a multidisciplinary research team working on real-world quantum communication systems, from laboratory prototypes to deployed free-space optical links and advanced experimental demonstrators.

Main responsibilities

• Development and characterization of free-space QKD systems

• Design, assembly and characterization of optical and optoelectronic experimental setups

• Integration and testing of quantum transmitters and receivers

• Characterization of free-space optical channels

• Calibration and experimental evaluation of QKD systems, including losses, stability, QBER and overall system performance

• Development of control, data acquisition and automation tools for experimental setups

• Experimental data analysis and documentation of results





• Participation in system integration and experimental demonstrations

Profile

We are looking for a motivated candidate with:

• University degree in
Physics, Photonics, Telecommunications Engineering or a closely related field

• Strong academic record and demonstrated scientific excellence

• Strong interest in experimental physics, optics, photonics and quantum technologies

• Interest in hands-on laboratory work and system development

• Programming skills in
Python, MATLAB or similar
are highly valued

• Experience with laboratory instrumentation, electronics, FPGA-based systems or experimental automation will be positively valued

• Previous experience in optics, photonics, quantum communications or related experimental fields is an advantage, but
not essential

• Previous research experience, final degree/master projects, publications, awards or competitive scholarships will be positively valued

• Ability to work both independently and as part

📌 Physicist – Quantum Communications (Madrid)
🏢 CSIC
📍 Madrid