Universität Bonn

Quantum Fluids of Light

Quantum Fluids of Light group
Dr. Julian Schmitt
Optical quantum gases
Photon condensation in tailored landscapes: From harmonic traps to lattice, ring and box potentials
Emergent phenomena
Complex systems made of light
Quantum Fluids of Light group
Optical quantum gases
Emergent phenomena

Join us

We are very happy to welcome new group members! You can learn more about our work on the research page.

We are always looking for Bachelor and Master students. 

If you are interested or have further questions, please contact Julian.

PhD students

We have job openings funded by an ERC Starting Grant, the Cluster of Excellence ML4Q and the CRC SFB/TR 185. In our team, you will acquire a broad skill set from experimental and theoretical quantum optics, coding, data analysis, electrical and mechanical engineering,  and soft skills as presentations at international workshops. We invite applications for two open PhD positions. The positions are funded within an ERC Starting Grant (TopoGrand). The successful candidates will collaborate with national and international partners. The specific research aims are as follows:

1) PhD in Quantum optics (exp.)
"Non-Hermitian Topological States with Photon Condensates"

The candidate will set up a nanostructuring setup and microcavity apparatus, along with state-of-the art imaging and spectroscopy setups, to control lattices of photon condensates. A central goal of the project is the identification and characterisation of topological phase transitions in the open photonic quantum system.

2) PhD in Quantum optics (exp.)
"Finite-Temperature Topology Emulation with Photons"

The candidate will develop a new optical pumping scheme to control non-Hermitian topological phases in arrays of photon condensates. A central goal of the project is engineering of reservoirs for photon condensates and study topologically protected edge states in the presence of statistical fluctuations.

Candidates should send a full CV including certificates and provide contact details for a referee. Further information on the positions is available upon request. The deadline is November 18th, 2022. Later applications will be considered in case the positions will not have been filled. The expected starting date is early 2023 (partially negotiable). We are looking forward to receiving your application!

Undergraduate research internships

We offer research projects for undergraduate students within the Undergraduate Research Internship Program of the Cluster of Excellence "Matter and Light for Quantum Computing" (ML4Q). It gives an opportunity of hands-on experience in scientific work and encourages interns to take part in seminars and events at the host institute as well as other cluster sites. The ML4Q Research School provides financial support and assistance in administrative issues. Interested students can apply once a year and join us for a 12-week internship. Call for applications for Summer 2023 is closed.

For more information about the program and application procedure, please see the ML4Q website:

Funding sources

© ERC, ML4Q, SFB/TR 185
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