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Journal Article

Coherently delocalized states in dipole interacting Rydberg ensembles: The role of internal degeneracies

MPS-Authors
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Abumwis,  Ghassan
Max Planck Institute for the Physics of Complex Systems, Max Planck Society;

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Waechtler,  Christopher W.
Max Planck Institute for the Physics of Complex Systems, Max Planck Society;

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Eiles,  Matthew T.
Max Planck Institute for the Physics of Complex Systems, Max Planck Society;

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Eisfeld,  Alexander
Max Planck Institute for the Physics of Complex Systems, Max Planck Society;

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Citation

Abumwis, G., Waechtler, C. W., Eiles, M. T., & Eisfeld, A. (2021). Coherently delocalized states in dipole interacting Rydberg ensembles: The role of internal degeneracies. Physical Review A, 104(1): 013311. doi:10.1103/PhysRevA.104.013311.


Cite as: https://hdl.handle.net/21.11116/0000-0009-22D4-1
Abstract
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.