Department of Complex Matter
Jamova cesta 39, 1000 Ljubljana, Slovenia

Dynamics of Quantum matter

We explore non-equilibrium many-body dynamics in quantum systems that experience symmetry-breaking, topological, or jamming transitions. These systems encompass superconductors, charge-density wave, and magnetic materials.

Experimental Soft Matter Physics

The research is conducted within the “Light and Matter” research program. The interaction of light with matter is one of the most important fields of physics and optical processes are indispensable in many branches of modern industry.

For students

Are you searching for an exciting and innovative topic for your seminar, summer work, or perhaps for a Masters or Diploma research? Check available topics an start your research journey with us.

Job opportunities

We are searching for talents! If you are searching for PhD position, if you are a motivated postdoc or senior researchers, check open positions and proposed research topics.

Our partners

We strongly believe that collaboration helps provide opportunities. We collaborate with other research institutions, businesses and industry. Learn here about our associates and how to become our partner.

April 11, 2024
Dr. Dragan Mihailović, a leading researcher in the field of quantum systems at the Jožef Stefan Institute (IJS), has successfully won the third project of the European Research Council (ERC), HIMMS (High-Resolution ...

Biomedical optics

Our recent activities include non-invasive characterization of human skin and select pathologies, objective monitoring and optimization of laser treatments, investigation of novel nanostructures for bioimaging and therapeutics, and development of all-optical tomography based on photothermal radiometry.


Laser medicine and surgery


Our group is engaged in development of innovative laser treatments and improvement of existing irradiation protocols, primarily in the fields of dermatology (port wine stains), aesthetic surgery (skin rejuvenation, lipolysis), and dentistry. The approaches include detailed numerical modelling, testing in animals models, and clinical trials.

Collaboration with Fotona, d.o.o., Ljubljana, and University of California at Irvine, USA.


Noninvasive characterization of human tissue in vivo


We are developing innovative approaches for noninvasive characterization of biological tissues in vivo, primarily involving pulsed photo-thermal radiometry and/or diffuse reflectance spectroscopy. Potential practical applications of current interest are objective analysis of dermatologic laser treatments (e.g., skin rejuvenation, removal of tattoos) and assessment of the age of traumatic bruises (for forensic investigations).

Collaboration with Fotona d.o.o., Ljubljana, and Department of knowledge technologies (E8).


Nanostructures for bioimaging and therapy


This research concerns two innovative contrast agent classes: Inorganic nanoparticles that exhibit upconversion fluorescence (UCF; e.g., Yb3+, Tm3+:NaYF4) and nanostructures engineered from animal erythrocytes and containing IR-absorbing dye ICG. Such biocompatible nanoprobes have great potential for diagnostic imaging and therapeutic applications.

Collaborations with the Department for Materials Synthesis, IJS; Department for Inorganic Chemistry and Technology, IJS; the University of California at Irvine; and the University of California at Riverside, USA.