City:  Jena
Date:  Jun 12, 2022

Researcher in Quantum Cryptography (IOF-2022-27)

The Fraunhofer-Gesellschaft ( currently operates 76 institutes and research institutions throughout Germany and is the world’s leading applied research organization. Around 30 000 employees work with an annual research budget of 2.9 billion euros. 

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.


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 (


What you will do

Your field of work could include the following activities:

  • Development of high-bandwidth quantum communication systems
  • Field demonstrations of quantum key distribution in fibre 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 fibre 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 you bring to the table

In addition to 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 fibre 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

  • 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 (fibre technology, nanofabrication)
  • Fibre 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).


The weekly working time is 39 hours. The weekly working time is 39 hours. The position can also be filled on a part-time base. The position is initially limited to 2 years with possibility for prolongation.


We value and promote the diversity of our employees' skills and therefore welcome all applications - regardless of age, gender, nationality, ethnic and social origin, religion, ideology, disability, sexual orientation and identity. Appointment, remuneration and social security benefits based on the public-sector collective wage agreement (TVöD).


With its focus on developing key technologies that are vital for the future and enabling the commercial utilization of this work by business and industry, Fraunhofer plays a central role in the innovation process. As a pioneer and catalyst for groundbreaking developments and scientific excellence, Fraunhofer helps shape society now and in the future. 


Interested? Apply online now. We look forward to getting to know you!

Fraunhofer Institute for Applied Optics and Precision Engineering IOF 


Requisition Number: 16757                Application Deadline: 06/29/2022


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