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A: Fachverband Atomphysik
A 23: Ultra-cold Atoms, Ions and BEC IV (joint session A/Q)
A 23.5: Vortrag
Donnerstag, 9. März 2023, 12:15–12:30, F303
From single to binary dipolar supersolids: a platform offering possibilities beyond imagination — •Albert Gallemi — Institut für Theoretische Physik, Leibniz Universität Hannover
Recent breakthrough experiments on dipolar condensates have reported the creation of supersolids. Supersolids have been observed both in elongated and oblate geometries, where they display themselves as 1D and 2D array of quantum droplets. In a single-component dipolar system, two main parameters (the ratio between dipolar and contact interactions and the density) can trigger different ground state configurations, in terms of different density patterns. As a result, apart from droplet arrays, one can observe the formation of honeycomb patterns and other kind of structure subject to randomness under the presence of an external confinement providing finite-size effects.
When two dipolar components coexist, the miscible-immiscible transition (which now depends on the dipole-dipole interaction) and the quantum number mF corresponding to the condensed components (both in modulus and sign) play a role. We will analyse the different paths that open thanks to these extra degrees of freedom. We will also comment about the particular case of coherently Rabi-coupled dipolar mixtures, where polarization becomes a key observable. Rabi coupling also provides an intriguing power to the beyond-mean-field Lee-Huang-Yang correction, which can make the physics of droplets and supersolids to behave in a dramatically different way.