Researcher in Quantum Cryptography

The Fraunhofer Institute for Applied Optics and Precision Engineering (IOF) in Jena conducts applied research in optical system technology on behalf of the industry and as part of publicly funded joint projects. The range of services offered by the Fraunhofer IOF includes system solutions, starting with new design concepts, through the development of technologies, manufacturing and measuring methods to the construction of prototypes and pilot series for applications in the wavelength range from millimeter to nanometer.

The Fraunhofer IOF is also pioneering applied optical quantum technology research and offers innovative solutions for science and industry wherever quantum systems have the potential for revolutionary applications.

We seek a researcher to join our „ Quantum Communication Technologies” team to bring the vision of a quantum internet a step closer to reality. You will be part of an interdisciplinary team of scientists and engineers working on the physical and technical foundations of a secure quantum communication network (

Your field of work could include the following activities:

  • Development of high-bandwidth quantum communication systems
  • Field demonstrations of quantum key distribution in fiber networks 
  • Management of work packages within the QuNET initiative 
  • Defining and submitting research proposals and industry engagement

Fraunhofer IOF is pioneering applied quantum optics research and offers innovative solutions for science and industry wherever quantum systems have the potential for revolutionary applications. Research topics range from enabling photonic technologies to development of complete quantum communication, quantum imaging, and photonic quantum information processing systems. Fraunhofer IOF provides access to the entire photonics process chain from basic research in nonlinear optics and advanced fiber technology to nanofabrication, micro-assembly and systems integration. Successful candidates will thus have research opportunities in quantum information science, technology development, applied photonics, and industry.

For more information see also:

What we expect from you

With a PhD (or equivalent) in Physics or Engineering, applicants should have a proven research track record in quantum technology related research.

Prior research experience in at least one of the following fields is required:
  • Implementation of QKD protocols (Discrete and/or Continuous Variable)
  • Experimental Quantum communication in fiber networks and / or free-space links
  • Development of QKD Hardware, in particular Decoy State QKD Systems

Additionally, expert knowledge of any of the following is highly beneficial:
  • Quantum Random Number Generation
  • Photonic Integration and electro-optic modulation
  • Timetagging Single-Photon Detection Events

Prior professional experience in any of the following fields is beneficial:
  • Management of collaborative projects
  • Knowledge of agile project management methods

Applicants must have excellent communication skills, the ability to keep clear records, to work independently and to coordinate collaborative research activities and field demonstrations.
An ability to prepare scientific publications and research proposals, and to present results at local, national, and international research meetings and trade shows is expected.
Proficiency in English language is required. Proficiency in German language is beneficial.

What you can expect from us

  • Cooperation in a collegial, open-minded team in a well-equipped work environment
  • Personal and professional development opportunities in challenging R&D projects
  • Networking with first-class industrial partners and research groups
  • Access to state-of-the-art research and engineering infrastructure:
  • Engineering facilities (Fiber technology, nanofabrication, ...)
  • Fiber network and a 40-km lab-to-lab fiber link for quantum communications
  • Free-space optics testbed for satellite quantum communication
  • Flexible working hours and a family-friendly workplace
  • Appointment, remuneration and social security benefits based on the public-sector collective wage agreement (TVöD).
Appointment, remuneration and social security benefits based on the public-sector collective wage agreement (TVöD).
The working time consists of 39 hours per week.
The position is initially limited for 2 years.
In case of identical qualifications preference will be given to severely disabled candidates.
We would like to point out that the chosen job title also includes the third gender.
The Fraunhofer-Gesellschaft emphasises gender-independent professional equality.
This vacancy is also available on a part-time basis.

Fraunhofer is Europe’s largest application-oriented research organization. Our research efforts are geared entirely to people’s needs: health, security, communication, energy and the environment. As a result, the work undertaken by our researchers and developers has a significant impact on people’s lives. We are creative. We shape technology. We design products. We improve methods and techniques. We open up new vistas.

If we could arise your interest please apply with all necessary documents through our online applicant management system.

Job Reference: IOF-2021-65 Closing Date: 31 October 2021