January 3, 2025

First signs of stripe formation observed in cold-atom quantum simulator

First signs of stripe formation observed in cold-atom quantum simulator

In a new study, researchers from the Max Planck Institute of Quantum Optics under the lead of Timon Hilker demonstrated evidence of stripe formation, i.e. extended structures in the density pattern, in a cold-atom Fermi-Hubbard system. 

By using a quantum gas microscope and a special mixed-dimensional geometry, they were able to observe unique higher-order correlations in spin and charge densities related to those seen in some high-temperature superconducting materials. These findings, which shed light on a key phenomenon in condensed matter physics, suggest that individual stripe structures could form at higher temperatures than the much-debated stripe phase. This experiment represents a major step forward in using quantum simulators to explore the most fundamental properties of materials.

The work has been published in Nature.