In the Framework of the Quantum Austria Initiative a joint project from the University of Innsbruck and the TU Wien was awarded and starts at the beginning of 2023. The “Austrian Quantum Simulator Infrastructure” project with a total funding of about 3 Million Euros will greatly enhance the already existing quantum simulators in several labs in Innsbruck and Vienna and also help in the building up of new simulators. Quantum simulators are a very powerful tool to study complex quantum systems by mimicking their behaviour with a quantum system which is fully controllable. The project consortium combines a great variety of physical systems which are used as simulators, including solid-state systems, ultracold atoms and trapped ions. Our group is participating with our long-range interacting atoms inside an optical lattice and our Rydberg tweezer array experiment.
Congratulations to Gabriele who won the prize for the best poster at the EMMI Workshop on Long-Range Ultracold Interactions 2022.
Now published in PRR with collaborators from ICFO, Barcelona! In the recent years, great effort has been devoted toward the study of symmetry-protected topological phases. We show that the bond order wave (BOW) induced by frustration between competing couplings has a nontrivial topological sector in the presence of chiral symmetry. We reveal its topological nature by finding a nonzero string order correlator and a degenerate entanglement spectrum, and design a realistic experimental scheme involving magnetic atoms trapped in an optical lattice. The latter paves the way towards an efficient quantum simulation of topological phases in many-body quantum systems.
The paper can be accessed here: Phys. Rev. Research, and the pre-print here: arXiv
Alex held his defense for his PhD thesis last week and is now officially a Doctor of Philosophy. He’s moving to Canada next for a post-doc position! Congratulations and good luck!
Now published in PRA with collaborators from JILA, Boulder (Colorado, USA), we accurately determine the scattering length for the four bosonic erbium isotopes with highest abundance in the magnetic field range from 0G to 5G. We use the cross-dimensional thermalization technique and extract the scattering length by applying a fit of the complete Enskog equations of change and by utilizing an analytic formula for the so-called number of collisions per re-thermalization. We benchmark our results with the very accurate but experimentally more demanding lattice modulation spectroscopy, confirming the accuracy of our experimental protocol.
The paper can be accessed here: Phys. Rev. A, and the pre-print here: arXiv