Dipole-quadrupole Förster resonance in cesium Rydberg gas

The resonant energy transfer between two close particles, also known as Förster resonance in atomic or biological systems, is usually associated with dipole-dipole interaction. In Rydberg atoms, it is a widely used tool to enhance the interactions between particles. Here, we observe a resonant energ...

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Bibliographic Details
Published in:Journal of physics. B, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2016-11, Vol.49 (21), p.214001
Main Authors: Maineult, Wilfried, Pelle, Bruno, Faoro, Riccardo, Arimondo, Ennio, Pillet, Pierre, Cheinet, Patrick
Format: Article
Language:English
Subjects:
dipole-quadrupole interaction
Förster resonance
Rydberg atoms
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Summary:The resonant energy transfer between two close particles, also known as Förster resonance in atomic or biological systems, is usually associated with dipole-dipole interaction. In Rydberg atoms, it is a widely used tool to enhance the interactions between particles. Here, we observe a resonant energy transfer between Rydberg atoms that cannot be attributed to a dipole-dipole interaction, owing to selection rules, and comes instead from an efficient dipole-quadrupole process. We compare the measured probability transfer with a theoretical model including quadrupolar terms and find very good agreement with our measurement. Further studies of those multipolar resonances should probe their dependences on various parameters (quantum numbers, relative orientation of the atoms), and may find some applications in quantum procedures where dipole-dipole resonance cannot be used, for instance where the states of interest have a difference in angular momentum of two.
ISSN:0953-4075
1361-6455
DOI:10.1088/0953-4075/49/21/214001