CQD Special Seminar

17. December 2019 16:00

Seminar room 2.404, Kirchhoff-Institut für Physik, INF 227

Quantum simulation with cold atoms - From spins to matterwaves

Dr. Martin Gaerttner
Kirchhoff-Institut für Physik, Universität Heidelberg

Quantum simulation is the idea to overcome the problem of quantum complexity by using special purpose quantum computers to emulate the quantum many-body dynamics of interest. Such quantum simulation experiments have been realized in the last decade using various platforms, including trapped ions and ultracold atoms. Nevertheless, many open questions remain about how exactly these systems can contribute to our understanding of the dynamics of strongly interacting quantum systems and how we can use them to make faithful predictions. I will discuss recent advances in detecting coherence and entanglement in artificial quantum magnets and ultracold atomic clouds.

CQD Colloquium

12. November 2025 16:30 Uhr

INF 226, K1-3 (Goldbox)

tba

Dr Rob Smith, University of Oxford

PreTalk: Andreea Oros, KIP, Heidelberg University

CQD Special Seminar

4. November 2025 14:15 Uhr

Kirchhoff-Institut für Physik, INF 227, Seminar Box 2

Josephson supercurrents and vortex dynamics in binary Bose-Einstein condensates

Dr. Alice Bellettini, Department of Applied Science and Technology, Politecnico di Torino, Italy

Quantum bosonic gases, due to their manipulability, provide the perfect platform for observing macroscopic quantum many-body phenomena. These can be for example quantum vortices (“topological defects”), being the hallmark of superfluidity, or Josephson supercurrents. Such collective effects have been recently employed in the context of quantum simulation and atomtronics. Here, I will present my research on the properties of massive quantum vortices in different configurations, and on vortex-supported supercurrents.

I will go through the inertial effects governing the massive vortex dynamics, to then focus on dipole scattering processes and on Josephson supercurrents as well as self-trapping effects in two- and many-vortex systems. Finally, I will conclude with an overview of the open questions on the topic.

contact

Prof. Dr. M. Weidemüller
Physikalisches Institut
Im Neuenheimer Feld 226
69120 Heidelberg

06221-54 19470

Ferman Alkasari