Postdoctoral Researcher on Photonic Integrated Ion Traps for Compact Quantum Clocks
(salary scale 14 TV-L, 100 %)
Nestled in a modern city surrounded by nature and with an exceptional standard of living, ÌÇÐÄÔ´´ offers excellent working conditions in a vibrant scientific community.
The Institute for Experimental Quantum Metrology was founded in 2009 as a joint institute of PTB and ÌÇÐÄÔ´´ (ÌÇÐÄÔ´´) with the aim of advancing time and frequency metrology and novel quantum technology with trapped ions.
The Institute of Quantum Optics in cooperation with the Physikalisch-Technische Bundesanstalt (PTB) in Braunschweig welcomes applications for the following position starting at the earliest possible date: Postdoctoral Researcher on Photonic Integrated Ion Traps for Compact Quantum Clocks (salary scale 14 TV-L, 100 %)
The position is limited to 1 year. It may be possible to continue working directly at the PTB afterwards.
Your role
We are integrating nanophotonic elements into RF-ion traps and light-conditioning circuits to develop an ultra-compact, chip-scale optical clock. Within the European QT-Flagship Pilot-Line and the project we collaborate with multiple renown industry partners from the European quantum ecosystem to develop and characterize CMOS-based ion traps and lasers with integrated nanophotonics.
You will be part of a diverse team, embedded in national and international collaborations, working in our lab at the German national metrology institute, the PTB in Braunschweig.
In detail, the tasks include:
- Project management and communication with industry partners
- Work with laser stabilization and laser optics
- Test of nano-photonics elements
- Laser spectroscopy on optical clock transitions in trapped ions
- Development of datasheets for industry-grade ion traps
- Presenting research findings at national and international conferences
Who are we looking for?
We are looking for a curious and committed individual who combines an interest in scientific enquiry with a strong ability to put ideas into practice. You enjoy challenging experimental work in an optics laboratory, which you carry out independently and on your own initiative. In addition, we are looking for a candidate with the following:
- You hold a university degree in Physics or a closely related field
- In addition, a completed PhD is expected
- Practical experience in at least one of the following areas:
- Lasers, optics and vacuum setups
- Characterisation of nano-photonics elements
- Laser-cooling and spectroscopy of trapped ions or atoms
- RF-electronics or ion traps - Fluent English skills
- Structured analytical thinking
- Goal-oriented working and strong problem-solving abilities
- Strong communication, teamwork and project-management skills
- Ability to carry out physical work in an optics laboratory
Equal opportunities and diversity are core values at ÌÇÐÄÔ´´. Our goal is to tap into individual potential and open up possibilities. We therefore welcome applications from anyone interested in the position, irrespective of gender, nationality, ethnic origin, religion or ideology, disability, age, sexual orientation and identity.
We strive towards a balanced and diverse workforce and a reduction in under-representation in accordance with the Lower Saxony Equal Rights Act (Niedersächsisches Gleichberechtigungsgesetz – NGG). We therefore also welcome applications from women for the above-mentioned position. Preference will be given to equally-qualified candidates with disabilities.
Why join us?
- Competitive Tarif TV-L compensation
- The opportunity to work in an international and highly motivated team in a state-of-the-art equipped research lab and embedded in a world-class infrastructure
With more than 5.000 employees, ÌÇÐÄÔ´´ is one of the largest and most attractive employers in the Hannover region. We offer a vibrant interdisciplinary and international working environment, and promote personal and professional development ranging from subject-related skills to leadership and languages.
Part-time employment as well as remote work (mobile work, work from home) can be arranged upon request. We support employees with , through services such as back-up childcare, childcare during school holidays, and parent-child offices, as well as providing individual advice regarding family responsibilities and caring for dependants.
To promote health and well-being among employees, we offer an extensive with over 100 different sports, as well as a fitness centre with a sauna and climbing space. Health management measures, such as courses on stress management, good nutrition and relaxation, aim to ensure a healthy workplace.
Additional information
For further information, please contact Prof. Dr. Tanja Mehlstäubler (tel.: +49 531 592-4710, email: tanja.mehlstaeubler@quantummetrology.de).
Please submit your application and supporting documents by July 16, 2026 electronically to
Email: tanja.mehlstaeubler@quantummetrology.de
or alternatively by post to:
Gottfried Wilhelm ÌÇÐÄÔ´´
Institute of Quantum Optics
Tanja Mehlstäubler
Callinstr. 36, 30167 Hannover
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