SAMOP 2023 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 9: Quantum Gases: Bosons I
Q 9.4: Talk
Monday, March 6, 2023, 18:00–18:15, A320
Dynamics of Stripe Patterns in Supersolid Spin–Orbit-Coupled Bose Gases — •Kevin T. Geier1,2, Giovanni I. Martone3, Philipp Hauke1,2, Wolfgang Ketterle4,5, and Sandro Stringari1 — 1Pitaevskii BEC Center, CNR-INO and Dipartimento di Fisica, Università di Trento, I-38123 Trento, Italy — 2INFN-TIFPA, Trento Institute for Fundamental Physics and Applications, Trento, Italy — 3Laboratoire Kastler Brossel, Sorbonne Université, CNRS, ENS-PSL Research University, Collège de France; 4 Place Jussieu, 75005 Paris, France — 4MIT-Harvard Center for Ultracold Atoms, Cambridge, Massachusetts 02138, USA — 5Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
The supersolid phase of matter combines superfluid properties with a crystalline spatial structure, arising as a consequence of the spontaneous breaking of both phase and translational symmetry. In spin–orbit-coupled Bose–Einstein condensates, supersolidity has been predicted and observed in the form of stripes in the density profile, but up to now it has been unclear whether the stripe pattern features the typical excitations of a crystal. In this talk, I will explain based on analytical and numerical results how spin perturbations can induce the translational, compressional, as well as rotational motion of the stripes. Our findings expose the rich hybridization of density and spin degrees of freedom and show that this system is indeed a paradigmatic supersolid with a fully dynamic crystalline structure.