A fermionic potassium cloud, left without interaction and right interacting with dysprosium. (Credit: University of Innsbruck)

In the laboratory, physicists observe clouds of ultracold atoms in order to virtually dive into the interior of a neutron star or to return to the beginning of the universe. Certain quantum gases exhibit similar physical properties. A team led by Rudolf Grimm has now realized the first collisionally stable and strongly interacting mixed Fermi gas of two elements with different masses. They will use it to observe new superfluid states.

Peter Zoller and Ignacio Cirac

Yesterday, Nature Review Physics honored the beginning of experimental quantum computation 25 years ago. In May 1995, Ignacio Cirac and Peter Zoller published a comprehensive concept for the creation of a quantum computer using trapped ions. The article established a new field of research that has been decisively shaped by Innsbruck quantum physics in recent years.

The motion of magnetic objects can be made to interact with their internal acoustic waves. In this way, as physicists from Innsbruck show, nanoparticles can be cooled down to such an extent that they exhibit quantum properties.

Today, most quantum experiments are carried out with the help of light, including those in nanomechanics, where tiny objects are cooled with electromagnetic waves to such an extent that they reveal quantum properties. Now, a team of physicists led by Oriol Romero-Isart at the University of Innsbruck and the Austrian Academy of Sciences is proposing to cool microparticles with sound waves instead.

A particularly fascinating class of quantum states are topological states of matter.

Topological materials attract great interest and may provide the basis for a new era in materials development. In Science Advances, physicists around Andreas Elben, Jinlong Yu, Peter Zoller and Benoit Vermersch now present a new measuring method that allows to identify and characterize so-called topological invariants on various experimental platforms.

The Honorary Doctor Rainer Blatt with the Rector of the University of Madrid, Joaquín Goyache, and the Austrian Ambassador in Madrid, Christian Ebner.

For his scientific achievements in the field of quantum physics, experimental physicist Rainer Blatt received an honorary doctorate from the Complutense University of Madrid on Friday in Madrid. On Wednesday, Blatt was already accepted as a foreign member of the Spanish Academy of Sciences.

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