Self-bound liquid droplets in free space

March 2018. The LENS team observed the formation of liquid-like droplets in a quantum gas of ultracold atoms in free space. These atomic systems result to be confined on a finite volume even in the absence of any external potential, due to a self-binding mechanism coming from the competition of attractive and repulsive forces in... Continue Reading →

A new phase of matter: quantum liquid droplets

January and March 2018: In two recent papers published during the first trimester of 2018, the ICFO team has observed and studied for the first time a novel type of ultra-dilute quantum liquid that goes beyond the standard van der Waals paradigm. This liquid forms droplets: macroscopic clusters of ultra-cold atoms that are eight orders... Continue Reading →

As the atoms flow

July 2017: Borrowing a technique developed for mapping electrical conductance in semiconductor devices, QUIC physicists at ETH imaged cold neutral atoms as they are transported through constrictions narrow enough for quantum effects to come into play. These results highlight the potential of using neutral atoms to simulate electronic transport in nanoscale devices. Through a series of... Continue Reading →

Mott transition in a shallow periodic potential

January 2016: A consortium between the CNRS and LENS groups and well as the ICFO group report the first quantitative determination of the superfluid to Mott insulator transition for strongly-interacting one-dimensional bosons in arbitrary weak periodic potentials. Theoretical calculations and direct experimental measurements are in excellent agreement and show a significant shift of the transition... Continue Reading →

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