PhD positions, advanced THz Spectroscopies on Quantum Matter, Cologne University, Germany (Deadline: 03.07.2025)

We are excited to announce two PhD positions in the cutting-edge field of Terahertz
spectroscopy of quantum matter at the University of Cologne, Germany.

Have you ever wondered what happens when matter is pushed to its limits?
This research project focuses on studying the dynamical non-equilibrium properties of spin-orbit
coupled matter to uncover the microscopic coupling mechanisms between spin, orbital, lattice, and
charge degrees of freedom. This is achieved using ultrafast stimulus excitation (terahertz and mid-IR),
a 2D spectroscopy approach, and the application of strong magnetic fields up to 10 T at cryogenic
temperatures.

Candidate Profile:
We seek highly motivated candidates with a master’s degree in Physics, Applied Optics, Condensed
Matter Physics, Materials Science, or a related field, with outstanding academic performance. A strong
background in photonics, electromagnetism, quantum mechanics, and optics is highly desirable.

Required skills and experience:
• Proficiency in experimental techniques relevant to Terahertz Ultrafast Dynamics, such as ultrafast
laser systems, time-resolved pump-probe spectroscopy, THz spectroscopy, or MOKE.
• Familiarity with data analysis tools and theoretical knowledge of underlying principles and concepts.
• Programming skills in Python, MATLAB, LabVIEW, Origin, or similar for data analysis, simulations,
and modeling are advantageous.
• Excellent communication skills to present research findings effectively, both orally and in writing.
• Strong ability to work collaboratively in a research team and engage in scientific discussions.

Who We Are:
The Optical Condensed Matter Science Group, led by Prof. Dr. P. H. M. van Loosdrecht, consists of a
diverse team of international scientists and students. Our goal is to identify, understand, and control
novel physical phenomena and functionalities in condensed matter systems with a focus on nonequilibrium physics. We employ a variety of linear and non-linear optical techniques and develop
microscopic models to describe observed phenomena. The group is actively involved in the
collaborative research center CRC1238 “Control and Dynamics of Quantum Materials”.

Want more information or apply?
Dr. Evgeny A. Mashkovich
e.mashkovich@uni-koeln.de
https://ph2.uni-koeln.de/arbeitsgruppen/loosdrecht/subgroupmashkovich
or
Prof. Dr. Paul H. M. van Loosdrecht
pvl@ph2.uni-koeln.de
https://ph2.uni-koeln.de/arbeitsgruppen/loosdrecht