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The Hall effect is a cornerstone of modern science, spanning applications from cutting-edge technologies to the discovery of exotic topological phases of matter. In solid-state systems, it manifests as a voltage perpendicular to current flow in a magnetic field, giving rise to transverse Hall resistance. Yet, its behavior in quantum systems remains elusive. Using neutral-atom quantum simulators, we introduce the first direct measurement of Hall voltage and resistance in a non-electron-based system. This work links quantum simulations to real-world experiments, unlocking new avenues to explore the Hall effect in tunable, strongly correlated systems. T.-W. Zhou et al. |
Welcome to the website of the Ultracold Quantum Gases group at the European Laboratory for Nonlinear Spectroscopy (LENS), the Department of Physics and Astronomy of the University of Florence (Italy) and the Institute of Optics of the Italian National Research Council (CNR - INO). In our labs we use lasers and magnetic fields to produce the lowest temperatures of the Universe, just a few billionths of a degree above absolute zero...
At these temperatures, atoms stop moving and we can control them for a variety of different fundamental studies and applications. We can force atoms to arrange according to a periodic structure and simulate the behavior of crystalline solids and new materials. We can use the atoms as ultra-high accurate sensors to probe forces with the power of quantum mechanics. We can study how quantum particles combine together under the action of strong interactions and how superfluidity develops. We can use these ultracold atoms to process information and develop new quantum technologies.
Dress warmly and... follow us for this ultracold journey!
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A new PhD course is starting, and with it comes a wave of new students joining our team. An injection of fresh energy, curiosity, and ideas! Welcome to Michael Stiven Caracas Núñez (BaLi), Èlia Solé Cardona (Dy), Alessandro Vanni (Yb Tweezers), and Alberto Terenzi (Li). |
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Thanks to a fruitful collaboration with the electronic workshop of LENS, CNR-INO and INRiM, we have developed a new low-impedance and versatile RF antenna. The innovative design is tailored for cold atoms experiments, and we successfully tested its performance with ultracold lithium atoms. Our solution combines an optimized RF coil geometry with transmission-line impedance transformer, enabling large currents to flow through the coil while keeping electromagnetic interference with surrounding equipment negligible and maintaining wide optical access. Our versatile design may serve as a new standard for generating RF fields in cold atoms experiments. F. Scazza et al. |
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Alessio Ciamei has received an ERC Starting Grant for his project COMPASS: "An ultracold Molecule Platform for fundamental Asymmetry Searches". You can find the theoretical proposal behind COMPASS in his recent preprint written in collaboration with the group of Prof.M.Tomza (University of Warsaw): Congratulations! Positions are available at different levels. To learn more you can contact
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We have finished assembling and baking our vacuum system, which is now ready to host laser cooled Yb atoms! |