Supersolid behavior of a dipolar quantum gas

April 2019. The LENS team has found experimentally a regime in which a quantum gas of magnetic atoms has supersolid properties, i.e. it behaves simultaneously as a solid and a superfluid [1,2]. This discovery ends a quest lasting more than 15 years, motivated by the seminal theory work by outstanding theorists, among which the QUIC... Continue Reading →

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 →

Milestone: realization of topological insulators

September 2016: QUIC has reached the first milestone on the realization of topological insulators just few weeks before the Nobel prize in Physics for 2016 to F. D. M. Haldane was announced! Shortly before the kick-off of the QUIC project, the ETHZ group successfully realized a quantum simulation of the topological Haldane model in an... Continue Reading →

Floquet topological insulators

May 2017: Since the discovery of the quantum Hall effects, topological insulators and superconductors have attracted considerable interest in the field of condensed-matter physics. Such topological states of matter can be generated through intrinsic properties of materials; this is the case of topological insulators, which arise due to the large intrinsic spin-orbit coupling of specific... Continue Reading →

QUIC plenary meeting

April 20-21, 2017:    First plenary meeting of all QUIC partners in Firenze, Italy More than 40 people from QUIC have participated to the meeting, with all the nodes well represented. The meeting has been a success: it has effectively allowed the presentation of the latest results by the consortium, the discussion of new ideas and... Continue Reading →

Scattering of bright solitons by disorder

April 2016: The CNRS group is studying experimentally an intriguing aspect of one-dimensional transport, namely that of bright solitons in attractive-interacting bosonic 1D gases. The soliton size has been precisely characterized as a function of the scattering length through three-body losses. Close to the collapse threshold, the solitons are shown to be strongly bound. The... 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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