2021/03/14 by Ghassan Abumwis, Christopher W. Wächtler, Matthew T. Eiles +1
Physics and Astronomy · #Advanced Chemical Physics Studies #Atomic physics #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Degeneracy (biology) #Degenerate energy levels #Delocalized electron #Dipole #Exciton #Lattice (music) #Magnetic field #Physics #Quantum mechanics #Rydberg formula #Spectroscopy and Quantum Chemical Studies #Zeeman effect #cond-mat.dis-nn #physics.atom-ph #quant-ph
paper · pdf · doi:10.1103/physreva.104.013311
published as Phys. Rev. A 104, 013311 (2021)
arxiv created 2021/03/14 · openalex created_date 2021/03/29 · openalex publication_date 2021/07/12 · arxiv updated 2021/07/21 · openalex updated_date 2026/08/05
We investigate the effect of degenerate atomic states on the exciton delocalization of dipole-dipole interacting Rydberg assemblies. Using a frozen gas and regular one-, two-, and three-dimensional lattice arrangements as examples, we see that degeneracies can enhance the delocalization compared to the situation when there is no degeneracy. This enhancement is particularly large in the case of the three-dimensional (3D) random gas, but is absent for 1D arrangements. Using the Zeeman splitting provided by a magnetic field, we controllably lift the degeneracy to study in detail the transition between degenerate and nondegenerate regimes. These observations, although specific to the experimentally clean Rydberg gas, have generic implications for various dipole-interacting systems.