Next CQD Colloquium (funded by Structures) will be given by Prof. Quentin Glorieux
Please note the place and time: Wednesday, 26th of June at 4:30 p.m., PI, INF 226, K 1-3, Goldenbox
The main talk will be given by Prof. Quentin Glorieux about:
Fluids of light: from hydrodynamics to quantum phase transition
Under specific conditions, photons could behave as a quantum gas with interaction, we refer this as a "fluid of light". In this talk, we present an experimental platform for fluid of light in a hot Rubidium vapor [1] allowing to model 2D+1 Hamiltonians using all-optical control . Using full-field retrieval of the quantum fluid, we are able to measure momenta distributions and hydrodynamical observables and use this information to probe the superfluid transition [2, 3] in a time-resolved manner. We also engineer the quantum fluid to study the dynamics of quantized vortices and scale it towards the study of turbulence [4]. Finally, we present future direction of the field on quantum phase transition.
[1] Glorieux, Q. et al. Hot atomic vapors for nonlinear and quantum optics. New Journal of Physics 25, 051201 (2023).
[2] Huynh, J. et al. Two-dimensional superflow past an obstacle of arbitrary penetrability: Exact results for the critical velocity 2023. arXiv: 2305.01293.
[3] Michel, C. et al. Superfluid motion and drag-force cancellation in a fluid of light. Nat. Comm. 9, 2108 (2018).
[4] Abobaker, M. et al. Inverse energy cascade in two-dimensional quantum turbulence in a fluid of light 2022. arXiv: 2211.08441t:
The pretalk will be given by Niklas Rasch, KIP, University of Heidelberg
For information about the CQD Colloquium, please see: https://cqd.uni-heidelberg.de/events/cqdcolloquium
mehr ...
Kirchhoffs wissenschaftliche Tätigkeiten waren so innovativ und bahnbrechend, dass sie heute noch als Grundlage für Forschungen und industrielle Anwendungen der Physik, Chemie und Elektrotechnik dienen. Zu Ehren des 200. Geburtstags von Gustav Kirchhoff präsentiert das Kirchhoff-Institut für Physik in Zusammenarbeit mit dem Physikalischen Institut und dem Universitätsmuseum eine Ausstellung, um Neues zu entdecken und Altbekanntes neu einzuordnen.
mehr ...