Taming, slowing and trapping atoms with light
Cold is quantum, Quantum is cool!
We shape quantum matter
Multicolored lasers for a variety of atoms
Keeping our eyes on the quantum world
Join our ultracool group!
High technology for great science
Taming, slowing and trapping atoms with light

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!

LAST NEWS

Repumper lasers added!

We’ve successfully integrated the 679nm and 707nm lasers into our experiment. They improve the blue and red mot stages by closing two decay channels, leading to a factor of 10 increase in density that is helpful to move forward with our optical tweezers. Stay tuned for the next update!

Congratulations Ludovica!

We are immensely proud of Ludovica Donati, who successfully defended her PhD thesis, “Generating quantum coherence with incoherent radiation”. Her research deals with the production of Fano coherence in atomic systems induced by interactions with incoherent radiation, paving the way for the first detection of such phenomena on this platform. This achievement marks an important milestone in her academic career and we look forward to her future contributions to the scientific community. Congratulations, Dr. Donati! .

See also the thesis here

Our review on atomic quantum mixtures just published in Nature Reviews Physics

After decades of improvements in cooling techniques of several atomic species and in finding methods to achieve stable quantum mixtures, the field is now ready for an extensive use of such versatile platforms to investigate various physical problems. Relevant examples are the dynamics of impurities in a quantum gas, the miscibility condition of different gases, the study of exotic topological structures, the interplay between magnetism and superfluidity, the formation of artificial molecules or new few-body states. In this review we illustrate the differences among possible quantum mixtures — whether homonuclear spin mixtures or heteronuclear ones — and show how they can be exploited to investigate a plethora of topics from the few-body to the many-body regime. In particular, we discuss quantum mixtures of ultracold gases under three different perspectives: systems made of a few atoms of different kinds, single impurities within a host gas and quantum mixtures of two interacting gases.

C. Baroni et al.
Quantum mixtures of ultracold gases of neutral atoms
Nat. Rev. Phys. (2024)

EIC project AQLAS has started

In this ambitious EIC Transition project we aim at developing the laser of our dreams: narrow and stable everytime you push the ON button. The project is a joint effort between the Ba+/Li group and the companies SILENTSYS, IDIL and A8. They will help us turn our ideas into a real product. We are looking for motivated people to join us, contact us for open positions!

Joel begins his PhD journey with us!

We are excited to announce that Joel George has joined our group to pursue his PhD on quantum dynamics control using an integrable CMOS-compatible atom chip testbed. Joel’s project will focus on developing a load-lock system for the rapid replacement of atom chips without breaking the vacuum in the science cell. This innovative testbed will advance applications in atom interferometry, magnetometry, and quantum interfaces. His PhD is fully supported by the Marie Skłodowska Curie Action Matter Wave Interferometer (MAWI). Welcome aboard, and best of luck, Joel!