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JOŽEF STEFAN INSTITUTE
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.

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February 6, 2024
The absence of efficient light modulators for extreme ultraviolet - EUV and X-ray photons considerably limits their real-life application, particularly when even slight complexity of the beam patterns is required. In ...

Home / News / Coherent light control of a metastable hidden state published in Science Advance…

Coherent light control of a metastable hidden state published in Science Advances

November 24, 2023

Active control of quantum materials is highly desirable for a wide range of applications. Metastable hidden states, such as the one discovered a few years ago by researchers at the Department of complex matter at the Jožef Stefan Institute, offer completely new functionalities. However, the underlying mechanisms that lead to hidden states remains a largely open scientific topic. In a new study published on November 24 in Science Advances, prof. dr. Dragan Mihailović in collaboration with a group of researchers from Germany and USA, investigated coherent control of the transition to a metastable hidden quantum state in the quantum material 1T-TaS₂. Using time- and angle-resolved photoemission spectroscopy (trARPES), electronic and collective excitations during the transition to the hidden state were investigated in real time. Using laser excitation with time-controlled pulses, they managed to coherently control the transition to the hidden phase, thus revealing the importance of collective excitations which helped elucidate the mechanism for this interesting phenomenon.

You can read the article here: https://www.science.org/doi/10.1126/sciadv.adi4661