Orthogonal flexible Rydberg aggregates

Abstract

We study the link between atomic motion and exciton transport in flexible Rydberg aggregates, assemblies of highly excited light alkali atoms, for which motion due to dipole-dipole interaction becomes relevant. In two one-dimensional atom chains crossing at a right angle adiabatic exciton transport is affected by a conical intersection of excitonic energy surfaces, which induces controllable non-adiabatic effects. A joint exciton/motion pulse that is initially governed by a single energy surface is coherently split into two modes after crossing the intersection. The modes induce strongly different atomic motion, leading to clear signatures of non-adiabatic effects in atomic density profiles. We have shown how this scenario can be exploited as an exciton switch, controlling direction and coherence properties of the joint pulse on the second of the chains [K.~Leonhardt {\it et al.}, Phys.~Rev.~Lett. {\bf 113} 223001 (2014)]. In this article we discuss the underlying complex dynamics in detail, characterise the switch and derive our isotropic interaction model from a realistic anisotropic one with the addition of a magnetic bias field.

14 pages, 12 figures

References in corpus (7)

• Coherent Excitation Transfer in a Spin Chain of Three Rydberg Atoms
• Coherent dipole-dipole coupling between two single atoms at a Förster resonance
• Many-body theory of excitation dynamics in an ultracold Rydberg gas
• Survival Probabilities in Coherent Exciton Transfer with Trapping
• Newton's cradle and entanglement transport in a flexible Rydberg chain
• Quantum simulation of energy transport with embedded Rydberg aggregates
• Motion of Rydberg atoms induced by resonant dipole-dipole interactions

Cited by in corpus (11)

• Rydberg Aggregates
• Theoretical study of stimulated and spontaneous Hawking effects from an acoustic black hole in a hydrodynamically flowing fluid of light
• Tayloring Bose-Einstein condensate environments for a Rydberg impurity
• Exciton induced directed motion of unconstrained atoms in an ultracold gas
• Excitation Transport in Molecular Aggregates with thermal motion
• Kato's theorem and ultralong-range Rydberg molecules
• Two-dimensional spectroscopy of Rydberg gases
• Transport on flexible Rydberg aggregates using circular states
• Non-adiabatic dynamics in Rydberg gases with random atom positions
• Multi-Excitons in Flexible Rydberg Aggregates
• Quantum network tomography of Rydberg arrays by machine learning