Theory Team 2023

Theory Team 2023

Vortices in a dysprosium gas

Vortices in a dysprosium gas

By stirring the magnetic field which polarizes the atoms in a dysprosium condensate, we were able to generate vortices–tiny quantum tornadoes–in a dipolar gas for … Keep Reading…

Linear supersolid formation

Linear supersolid formation

Simulation of an interaction quench in a cigar trap

Nonlinear crystal growth

Nonlinear crystal growth

Simulation of 2D supersolid formation

Real-Time Simulation

Real-Time Simulation

GPE-Simulation of applying a Bragg-Pulse to a BEC

Real-Time Simulation

Real-Time Simulation

GPE-Simulation of the rephasing of a scrambled Supersolid state

THEORY GROUP

In our theory group, we utilise state-of-the-art methods to model the experiments of the ERBIUM and Er-Dy LABs, and provide assistance in guiding future experiments into the exciting phenomena not yet explored in dipolar quantum gases. The first major project of the theory group was to understand two-dimensional supersolidity, and we developed variational methods to investigate ideal scenarios moving from one- to two-dimensional droplet arrays, and new finite temperature theory to investigate evaporative cooling directly into the supersolid phase. This lead to the first observation of a 2D supersolid in a circular trap. With the erbium lab, we recently developed a discrete-one-dimensional model for strongly dipolar gases in a 1D lattice, elucidating new droplet and soliton phases in this system, explaining the observations from the erbium experiment.

Most recently, our focus has been on the study of two-component dipolar systems, and the nature of supersolidity in these systems.

If you want to learn more about the Theory group, you can find more info in the publications and/or contact us.

Lab news
In this paper, together with Dr. Giacomo Lamporesi at the University of Trento, we investigate more thoroughly the conditions required to generate vortices through magnetostirring, focussing on the currently experimentally accessible regime.
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Glitches--randomly distributed changes in a neutron star's rotation--also occur in supersolids!
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With collaborators from the University of Otago, we investigate the excitation spectrum and compressibility at the superfluid-to-supersolid transition point, showing that the speeds of sound and the compressibility are discontinuous at the transition.
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Lab Team

Francesca Ferlaino, Univ.-Prof. Dr.

Group Leader / PI

Manfred Mark, Dr.

Senior Scientist / Research Assistant

Andrea Di Carli, Dr.

Senior Scientist / Research Assistant

Russell Bisset, Dr.

External Collaboration (UQMT)

Thomas Bland, Dr.

Post-Doc (Theory)

Elena Poli, MSc.

PhD Student (Theory)

Simon Gschwendtner, BSc.

Master Student (Theory)