Characterization and control of quantum materials with optical vortex beams

Workshop, June 10th - 12th 2025

The fascinating physics of optical vortices, in particular light carrying orbital angular momentum (OAM), has resulted in a large interest and currently OAM light can be generated with high precision in a wide photon energy range. Consequently, also the interplay between optical vortices and matter has been investigated in a broad range of phases, from atoms and molecules to solids and plasmas. For example, the study of optical transitions in semiconductors nicely showed the increased complexity of the allowed optical transitions and how the OAM is transferred to the system. This workshop aims to take this a step further and explore how optical vortices can be used to characterize and control complex quantum materials. Through this workshop, it is foreseen to form and bring together a community and form an overview of current and future research endeavors.

Given the exploratory character, the scope of the workshop is purposely kept broad and topics can include, but are not limited to, the following:
• interaction of vortex beams with quantum condensates
• interaction/coupling of the Berry phase associated with the optical OAM vortex with the topological Berry phase in condensed matter
• inducing quantum phase transitions with OAM
• measuring and driving hidden order with vortex beams
• generation and characterization of chiral bosonic modes

Participants are encouraged to share preliminary (negative) results and conceptual ideas.

This workshop is organized by SPICE as part of the Gutenberg International Conference Center (GICC) at Johannes Gutenberg University Mainz (JGU). The GICC is funded through the German Research Foundation’s (DFG) university allowance in the Excellence Strategy program and aims at fostering JGU as a national and international research hub. By organizing regular conferences and workshops in fields of excellent JGU research, the GICC provides a platform to build interest networks and collaborations – to promote exchange and dialog among academics and research groups from all over the world.

Organizers
Hugo Dil, EPFL
Mauro Fanciulli, Cergy Paris University, CEA, LIDYL
Giulia Fulvia Mancini, University of Pavia
Juraj Krempasky, PSI
Jan Minar, New Research Center, Pilsen

Invited Speakers

Konstantin Bliokh, RIKEN
Rakesh Choubisa, BITS Pilani
Claire Donnelly, MPI CPfS
Kayn Forbes, UEA
Carlos Hernandez-Garcia, University of Salamanca
Václav Holý, Charles University
Tilmann Kuhn, University of Münster
Thomas La Grange, EPFL
Martin Luttmann, EPFL
Ian McNulty, Lund University
Gérard Perren, XRnanotech AG
Jörg Raabe, PSI
Sujoy Roy, LBNL
Maurizio Sacchi, Sorbonne University & SOLEIL
Didier Sébilleau, University of Rennes
Olga Smirnova, MBI Berlin
Yoshito Y. Tanaka, Hokkaido University