What happens when you accelerate hydrogen atoms to a breathtaking velocity of 120’000 m/s and shoot them onto the thinnest membrane there is? You get an absolutely fascinating diffraction pattern! In our latest publication we theoretically describe what to expect and why this is the ultimate mechanical grating for atomic matter-waves. More information can be found here.
Our manuscript on preparing internally cold beams containing only a single molecular structure was published in Physical Review Letters.
On the 13.th of April the “Lange Nacht der Forschung” (long night of research) will give everybody a great opportunity to get an idea about science and research made in Austria. Our contribution will be presented at the “Altes AKH” in Vienna where we are part of the team from the Vienna Doctoral Program of Complex Quantum Systems (COQUS). If you are around, please come by and discuss with us! The official program can be found here.
I just spend a very nice and inspriring week at the spring meeting of the German Physical Society in Erlangen, Germany. It’s great to come together with some many people, discuss in a very informal setting and make new connections you never thought of before.
Last week I spend two very exciting days in the group of Jochen Küpper at the Center for Free-Electron Laser Science, which is at the Deutsches Elektronen Synchrotron in Hamburg, Germany. It’s amazing to take a look at research done in these large facilities with unique equipment like a free electron laser.
In this post we take a look at THE prerequisite for matter-wave optics: how to make a particle behave like a wave.
The task to sort molecules can be quite challenging if they are very similar. This is even more the case if you want to sort a single molecular species according to its three-dimensional structure. The problem is that for most molecules a number of these so-called conformers are present and that they easily interconvert at room temperature. In a new study we propose how such a sorting can be achieved with molecular interference. We show how internally cold beams populated with just a single structure can be prepared. These might open new vistas for structure-sensitive collision studies. More information can be found here.
All four structures show the same molecule, they only differ in the three-dimensional arrangement. With our method we can make sure that both first diffraction orders (±1) are populated only with the red conformer, while it is a mixture of all four conformers for the other diffraction orders.
Our study on testing multi-path interference with massive particles has attracted a lot of attention since it was published two weeks ago. The latest is an article in Physics World by Edwin Cartlidge.
Born’s rule is one of the cornerstones of quantum physics. Needless to say that a potential violation of this rule might point to something very interesting happening. In a brand new publication we report about the first explicit test of this rule with matter-waves. Using a special slit mask manufactured by Ori Cheshnovsky at the University of Tel Aviv, we were able to state the first bounds on the impact of non-standard quantum mechanics. More information can be found here.
Diffracting massive molecules at a combination of slits to test Born’s rule.
The second part of the series on matter-waves covers … matter-waves! What is a matter-wave, who came up with the idea, and why is it so hard to observe them? Find the answer here.