Optical response of the supersolid polaron
Year: 2025
Type: article
Abstract: The ground-state properties of the supersolid polaron consisting of a neutral impurity immersed in a dipolar supersolid have recently been studied. Here, the optical response of an impurity in a dipolar supersolid is calculated and interpreted in terms of the contributions of the different excitation modes of the supersolid. The optical absorption spectrum reveals the two Van Hove singularities that correspond to the flattening of the two Goldstone modes of the supersolid at the Brillouin zone edge. A single peak is found in the superfluid regime corresponding to the roton minimum which diverges at the transition. We propose the response of an ionic impurity as an experimental probe for the supersolid excitations and show how this technique can be extended to neutral impurities with an electric or magnetic dipole moment.
Source: Physical Review Research
DOI: 10.1103/kl1y-pj63
Authors: Laurent H. A. Simons, Ralf Klemt, Tilman Pfau, Michiel Wouters, Jacques Tempere
Institutions: University of Antwerp, University of Stuttgart
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,625
Awards: Vortex matter in superfluid Fermi gases with imbalance and spin-orbit coupling, Ab-initio calculations for anharmonic polarons in hydrides, Polaronic effects in superfluid Fermi gases, A microscopic view of fermionic quantum matter with long-range interactions, G8099884938, Spin-orbit entangled anharmonic polarons.
OpenAlex ID: W4410810791