Work

Quantum Carpets of Higgs Quasiparticles in a Supersolid

Year: 2025

Type: article

Abstract: Supersolids formed from dipolar Bose Einstein condensates (BECs) exhibit spontaneous density modulation while maintaining global phase coherence. This state of matter supports gapped amplitude (Higgs) excitations featuring a quadratic dispersion relation. While Higgs modes are typically strongly damped due to coupling with other amplitude and phase modes, imposing an experimentally realistic toroidal geometry allows us to numerically study the time evolution and dispersion of a localized Higgs quasiparticle excitation, with minimal residual coupling to sound modes. Strikingly, the quadratic dispersion leads to the occurrence of (fractional) revivals, similar to those seen in the optical Talbot effect or the so-called quantum carpets. The revival times provide a novel method for determining the effective mass of the Higgs quasiparticle through a nonspectroscopic approach. These results pave the way for further studies of coherent Higgs dynamics and mutual interactions between Higgs quasiparticle.

Source: Physical Review Letters

DOI: 10.1103/6d1g-671p

Authors: K. Mukherjee, M. Schubert, R. Klemt, T. Bland, T. Pfau, S. M. Reimann

Institutions: Lund University, NanoLund, University of Stuttgart

Language: English

Topic: Cold Atom Physics and Bose-Einstein Condensates

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,750

Funders: Knut och Alice Wallenbergs Stiftelse, Vetenskapsrådet, European Research Council, H2020 European Research Council