Quantum Fluids

Welcome to the Quantum-Fluid group at the Physikalisches Institut of the University of Heidelberg! We are a new research group exploring the behavior of quantum fluids using ultracold assemblies of atoms. On this website, you will find more information on our team, our research, as well as the opportunities to join us!


If you have further questions or are interested in joining, simply contact me at:

chomaz@physi.uni-heidelberg.de


News

 


06/08/2021: August Heidelberg news.


Beginning of August, our motivated but pictureless postdoc joined the Dy team! Welcome Shuwei! Taking advantage of the reopening of Ziegelhausen III, Lauriane could finally enjoy the famous Supercrack. Credit for the picture of this latter event: Markus Neumann.

 

 



22/07/2021: Our Bragg spectroscopy study of dipolar Supersolidity performed with the Er team in Innsbruck (Ferlaino group) is finally published in PRA!


In this work, we studied the response of dipolar quantum gases to large-momentum Bragg excitations in the quasi-free particle regime, along the superfluid/supersolid/normal solid phase diagram. At the transition from superfluid to supersolid, the response amplitude decreases highlighting the apparition of density patterns. Yet the observed response reduction exceeds that from theoretically expected steady state. By comparing observations to theoretical predictions, our work highlights the central role played by coherent phase dynamics at the crossing of the phase transition in experiments. Check it out here.

 

 



13/07/2021: Joschka starts his master project, Prachi joins for a short internship.


On the 12th of July, Joschka started his master thesis project in which he will build the 3D MOT for our Dy lab. A few weeks earlier, Prachi also started a short internship in our Dy team looking at flat-top beams for our 2D-MOT. Welcome!

 

 



15/06/2021: Tobias and Michael join the mixture team!


On the 15th of June, Tobias and Michael had their first day as PhD student on the Mixture experiment. Michael is not exactly new to the group and joins us in full knowledge ;) Tobias joins us from Karlsruhe where he did his master thesis on optical fiber-based micro resonators. Welcome to both of them!

 

 



07/06/2021: Our latest work with the Dy team in Innsbruck (Ferlaino group) is now in PRL and featured in APS Physics Viewpoint and Physics World!


Our work in which we experimentally study the evaporation process into supersolid states in harmonically trapped cigar-shaped Dy Bose gases is now published. Check it out here, and also have a look at this nice coverage, here and there. In this work, we in particular observe that, in the evaporation process, density modulation first appears locally and precedes global phase coherence. (c) Carin Cain

 

 



11/05/2021: The Dy team gets bigger!


Beginning of May, Christian joined the group as a first bachelor student on the Dy team. He will help designing the experiment's vacuum apparatus. Karthik, who should have arrived in Heidelberg and joined us a PhD student, is unfortunately unable to travel from India due to the current sanitary situation. He is however joining us from distance! Welcome to both of you!

 

 



11/03/2021: Lauriane becomes member of the SFB ISOQUANT!


On March 11th, Lauriane was unanimously elected to be new principal investigator within the Collaborative Research Centre 1225 ISOQUANT! She now joins as a member of Project C)3, and will be keen on developing new projects soon within this extraordinary community of collaborators! For more info on the collaboration, see here.

 

 



01/03/2021: Jianshun joins the team!


On March 1st, Jianshun Gao joins the quantum-fluid group as first student in the new Dy Lab. Jianshun just arrived from China where he graduated from Nankai University. Jianshun was awarded a grant from the IMPRS Doctoral School in "4+4" program type. Welcome Jianshun and good start!

 



01/02/2021 - Lauriane arrived at Heidelberg University


On February 1st, Lauriane received her nomination as Junior Professor of Heidelberg University. She is now starting setting up her group and her new lab in the first floor of the Physikalisches Institut. She will start teaching on the summer semester 2021. A proper celebration will be held once COVID allows ;)