Borromean three-body FRET in frozen Rydberg gases

Year: 2015

Authors: Faoro R., Pelle B., Zuliani A., Cheinet P., Arimondo E., Pillet P.

Autors Affiliation: Univ Paris 11, CNRS, Lab Aime Cotton, ENS Cachan, Bat 505, F-91405 Orsay, France; Univ Pisa, Dept Phys, I-56127 Pisa, Italy; INO CNR, I-56124 Pisa, Italy.

Abstract: Controlling the interactions between ultracold atoms is crucial for quantum simulation and computation purposes. Highly excited Rydberg atoms are considered in this prospect for their strong and controllable interactions known in the dipole-dipole case to induce non-radiative energy transfers between atom pairs, similarly to fluorescence resonance energy transfer (FRET) in biological systems. Here we predict few-body FRET processes in Rydberg atoms and observe the first three-body resonance energy transfer in cold Rydberg atoms using cold caesium atoms. In these resonances, additional relay atoms carry away an energy excess preventing the two-body resonance, leading thus to a Borromean type of energy transfer. These few-body processes present strong similarities with multistep FRET between chromophores sometimes called donor-bridge-acceptor or superexchange. Most importantly, they generalize to any Rydberg atom and could lead to new implementations of few-body quantum gates or entanglement.

Journal/Review: NATURE COMMUNICATIONS

Volume: 6      Pages from: 8173-1  to: 8173-7

More Information: We are grateful to N. Hildebrandt and G. S. Schlau-Cohen for usefull discussions on biological terminology on FRET. This work was supported by ANR program COCORYM (ANR-12-BS04-0013), EU Marie-Curie program ITN COHERENCE FP7-PEOPLE-2010-ITN (R.F.), the public grant CYRAQS from Labex PALM (ANR-10-LABX-0039) (P.C.) and the EU H2020 FET Proactive project RySQ (grant N. 640378).
KeyWords: Rydberg gases; ultracold atoms
DOI: 10.1038/ncomms9173

Citations: 31
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