Postdoc Position Collective Effects in Resonator – Spin Hybrid Systems

Organisation/Company Saarland University Department Department of Physical Chemistry Research Field Physics » Quantum mechanics Physics » Solid state physics Researcher Profile Recognised Researcher (R2) Positions Postdoc Positions Final date to receive applications 31 Mar 2026 - 23:59 (Europe/Berlin) Country Germany Type of Contract Temporary Job Status Full-time Is the job funded through the EU Research Framework Programme? Not funded by a EU programme Is the Job related to staff position within a Research Infrastructure?

No

The Maser lab at Saarland University (UdS) has an opening for a postdoc, salary in accordance with the German TV-L salary scale, pay grade: E13 TV- L, duration of employment: 2 years, volume of employment: 100 % of standard working time. Within this project strong collective effects in spin-resonator hybrid systems are studied. Specifically, the influence of the collective coupling strength on phase and coherence losses will be under investigation.

The UdS Maser lab has expertise in studying and characterising solid-state spin systems for the regimes of weak, high cooperativity and strong coupling to a microwave resonator. This is complemented by theoretical modelling in the framework of cavity quantum electrodynamics. The aim is to understand spin dynamics influenced by strong collective effects for potential applications in sensing, communication, timekeeping and quantum technologies.

Studying spin dynamics in a regime of high cooperativity and strong light-matter interactions or strong dissipative interactions. Here, the spin ensemble relates to ‘matter’ and ‘light’ is represented by microwave photons residing in a resonator. Under strong magnetic dipole coupling both systems hybridise with coherent energy exchange. Spin-resonator hybrids can exhibit fascinating effects, like extended coherence or pathways to efficient and stable entanglement generation.

The predominant spin ensembles are comprised of NV- centres in diamond or pentacene molecules in p-terphenyl. These studies utilise microwave spectroscopy methods, in the steady-state and the time-domain.

• Characterisation of collective effects in spin-resonator hybrids
• Perform experiments using steady-state microwave spectroscopy, as well as time-resolved spectroscopy methods
• Design and development of new experimental setups for characterisation
• Perform data analysis and simulations to complement experimental work
• Help produce independent and original research within the UdS Maser lab, submit publications to peer-reviewed journals
• Contribute to the induction of other research staff and students

E-mail christo

Research Field Physics Education Level PhD or equivalent

Research Field Chemistry Education Level PhD or equivalent

Research Field Engineering Education Level PhD or equivalent

Skills/Qualifications

• Doctoral degree / PhD in Physics, Chemistry, Engineering or equivalent
• Optional language skills:
  German B1/B2

• Have programming skills in e.g, Python, Matlab, etc.
• Have experience in spectroscopy, preferably magnetic resonance spectroscopy
• Follow and actively promote UdS policies, including Equal Opportunities and Race Equality and maintain awareness and observation of Fire and Safety Regulations
• Carry out any other duties within the scope, spirit and purpose of the job as requested by the line manager

Languages ENGLISH Level Good

• A flexible work schedule allowing you to balance work and family, among other things the possibility of teleworking
• Secure and future-oriented employment with attractive conditions
• A broad range of further education and professional development programmes (for example language courses)
• An occupational health management model with numerous attractive options, such as our university sports programme
• Supplementary pension scheme (RZVK)
• Discounted tickets on local public transport services (‘Job-Ticket Plus‘ of the saar
  
  VV)

Selection process

Applications will be accepted until 31.03.2026. The applications will be evaluated and a decision on suitability will be based on experience and skills, regardless of gender, nationality, ethnic and social origin, religion/belief, disability, age, and sexual orientation and identity.

Additional comments

Please include the reference number W2795 in the subject line of the e-mail.
If you have any questions, please contact Dr. Christoph Zollitsch: christo