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Q: Fachverband Quantenoptik und Photonik

Q 22: Ultracold Matter (Bosons) II (joint session Q/A)

Q 22.3: Vortrag

Dienstag, 11. März 2025, 11:30–11:45, HS I PI

Magnetically ordered flux-supersolids with magnetic atoms in an anti-magic wavelength optical lattice — •Michele Miotto^1,2, Joana Fraxanet Morales³, Giovanni Ferioli⁴, Pietro Lombardi^5,6, Maciej Lewenstein^3,7, Luca Tanzi^8,6, and Luca Barbiero² — ¹Institut für Theoretische Physik, Technische Universität Berlin, Hardenbergstraße 36, 10623 Berlin, Germany — ²Institute for Condensed Matter Physics and Complex Systems, DISAT, Politecnico di Torino, I-10129 Torino, Italy — ³ICFO - Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, Av. Carl Friedrich Gauss 3, 08860 Castelldefels (Barcelona), Spain — ⁴Department of Physics and Astronomy, University of Florence, 50019 Sesto Fiorentino, Italy — ⁵Consiglio Nazionale delle Ricerche - Istituto Nazionale di Ottica, sede secondaria di Sesto Fiorentino — ⁶European Laboratory for Nonlinear Spectroscopy (LENS), Università di Firenze — ⁷ICREA, Pg. Lluís Companys 23, 08010 Barcelona, Spain — ⁸Consiglio Nazionale delle Ricerche - Istituto Nazionale di Ottica, sede secondaria di Pisa

Supersolidity is one of the most fascinating and investigated states of matter. In this work, we prove that the combination of geometrical frustration and strong long-range interactions can give rise to this many-body phase. In particular, we design an experimental platform where a Raman coupled mixture of bosonic magnetic atoms is trapped in a 1D anti-magic wavelength optical lattice. We model this setup by means of a frustrated extended Bose-Hubbard model and we explore its ground-state properties by means of DMRG simulations. We obtain a rich phase diagram, where we observe well-known insulating phases along with interesting gapless states: a chiral superfluid phase and a supersolid phase. The latter can also be characterized by non-trivial order in the current patterns, which can be related to magnetically ordered states such as ferrimagnets and ferromagnets.

Keywords: ultracold bosons; optical lattice; supersolidity; frustration; dipolar atoms