Strongly Interacting Mass Imbalanced Superfluid with ultracold fermions

Informacje na temat projektu

SIMIS

Identyfikator umowy o grant: 894429

DOI

10.3030/894429

Realizacja projektu zakończyła się 30 Listopada 2020

Data podpisania przez KE 24 Lutego 2020

Data rozpoczęcia 1 Lipca 2020

Data zakończenia 30 Czerwca 2022

Finansowanie w ramach

• EXCELLENT SCIENCE - Marie Skłodowska-Curie Actions

Koszt całkowity

€ 174 167,04

Wkład UE

€ 174 167,04

Koordynowany przez

UNIVERSITAET INNSBRUCK
Austria

Periodic Reporting for period 1 - SIMIS (Strongly Interacting Mass Imbalanced Superfluid with ultracold fermions)

Okres sprawozdawczy: 2020-07-01 do 2022-06-30

Podsumowanie kontekstu i ogólnych celów projektu

The project aims at novel superfluid states in mixtures of ultracold fermionic atoms. Using different atomic species introduces mass imbalance into the problem, which according to theoretical predictions favors the emergence of unconventional superfluids. Such superfluids have been widely discussed in the theoretical literature, but have been elusive in the lab. With the mixture of dysprosium and potassium atoms, we have introduced a new and very promising platform for experimental research along these lines. A central objective is the realization of the first mass-imbalanced superfluid system of fermions.

Prace wykonane od początku projektu do końca okresu sprawozdawczego oraz najważniejsze dotychczasowe rezultaty

In the first 5 months of the project we have optimized the preparation process of a deeply quantum-degenerate sample. This involves laser cooling and trapping and novel schemes of evaporative cooling of the quantum mixture. Moreover, we have developed schemes for the efficient tuning of interactions between the two components via a quantum-mechanical resonance (so-called Feshbach resonance). In this way, we have reached the major milestone of a strongly interacting mixture of fermionic dysprosium and potassium atoms.

Innowacyjność oraz oczekiwany potencjalny wpływ (w tym dotychczasowe znaczenie społeczno-gospodarcze i szersze implikacje społeczne projektu)

We have created the first quantum-degenerate, strongly interacting mixture of ultracold fermionic atoms with different masses, and we expect to reach the superfluid state in further experiments. As a wider impact, the project will provide deeper understanding of exotic mechanisms that lead to superfluidity and superconductivity in new materials.

Effect of strong interactions on the spatial profile of fermionic K atoms mixed with Dy atoms