Orateur : Pr. Keiichi INOUE (Functional Materials Group, The Inst. for Solid State Physics, University of Tokyo)

Rhodopsins, or retinal proteins, are light-sensitive membrane proteins, with very important biological functions. In vertebrates, rhodopsins are the sensors for vision. 

Pr. Inoue is a world-leading expert in the photochemical studies of microbial retinal proteins (https://www.icpworldcongress.com/keiichi-inoue). His research aims at a detailed molecular understanding of how the different biological functions of these rhodopsins are encoded in the structural and spectroscopic properties. The abstract can be found : here

Contact: Stefan Haacke (stefan.haacke@ipcms.unistra.fr)

Orateur : Saad Yalouz (Laboratoire de Chimie Quantique de Strasbourg)

Résumé : In the realm of quantum computing, the characterization of many-body systems stands out as one of the most promising applications for emerging quantum platforms. While significant effort has been dedicated to developing near-term quantum algorithms for describing purely fermionic systems (particularly for Quantum Chemistry), there exists a gap in extending beyond the “bare” electronic structure to encompass the influence of an external environment. This gap becomes apparent when considering hybrid “fermion+boson” systems, which naturally arise when the electronic structure of a system interacts with an external bosonic field, such as photons or phonons. The theoretical description of such systems poses a considerable challenge, necessitating the depiction of entanglement between the two types of particles. Addressing this challenge defines an interesting target for quantum computers. In this presentation, I will delve into recent endeavors initiated at the Laboratoire de Chimie Quantique Strasbourg to tackle these questions. Drawing from a polaritonic chemistry problem, I will elucidate how we are currently designing near-term quantum algorithms to describe both ground and excited states in such systems

Contact : Paul-Antoine Hervieux  

Orateur : Simon Lenne (Magnetism and spintronics group, CRANN, Trinity College Dublin, Dublin, Ireland)

Résumé : There is growing interest in discovering new materials with strong spin-orbit torque (SOT), leading to the study of a wider range of magnetic materials. The harmonic Hall method is a commonly used technique for SOT measurement. However, this method is unable to distinguish between the Nernst effect and SOT. To address this, I developed an extension of the harmonic Hall method which allows for the accurate separation of Nernst and SOT effects. By simultaneously recording and analysing both the longitudinal and transverse signals, this method enables clear and precise separation of the SOT and the anomalous Nernst signals. Furthermore, the numerical implementation of this method enables the study of samples with a more complex anisotropy, such as Mn₂RuGa. This approach allows for efficient measurement of SOT, even when signals are small or dominated by the Nernst effect. As a result, a greater diversity of potential materials can be analysed with accuracy.

Contact: Jean Besbas: jean.besbas@ipcms.unistra.fr