Observation of a Resonant Four-Body Interaction in Cold Cesium Rydberg Atoms

Year: 2012

Authors: Gurian J.H., Cheinet P., Huillery P., Fioretti A., Zhao J., Gould P.L., Comparat D., Pillet P.

Autors Affiliation: Laboratoire Aimé Cotton, CNRS, Univ Paris-Sud, Bâtiment 505, 91405 Orsay, France;
State Key Laboratory of Quantum Optics and Quantum Optics Devices, College of Physics and Electronics Engineering, Shanxi University, Taiyuan 030006, China;
Department of Physics, University of Connecticut, Storrs, Connecticut 06269-3046, USA

Abstract: Cold Rydberg atoms subject to long-range dipole-dipole interactions represent a particularly interesting system for exploring few-body interactions and probing the transition from 2-body physics to the many-body regime. In this work we report the direct observation of a resonant 4-body Rydberg interaction. We exploit the occurrence of an accidental quasicoincidence of a 2-body and a 4-body resonant Stark-tuned Forster process in cesium to observe a resonant energy transfer requiring the simultaneous interaction of at least four neighboring atoms. These results are relevant for the implementation of quantum gates with Rydberg atoms and for further studies of many-body physics.


Volume: 108 (2)      Pages from: 023005  to: 023005

More Information: This work has been supported by the Institut francilien de recherche sur les atomes froids (IFRAF). J. G. and A. F. have been supported by the \”Triangle de la Physique\” under Contract No. 2007-n.74T and No. 2009-035T GULFSTREAM. P. G. has been supported by the \”Triangle de la Physique\” under Contract No. 2010-026T COCORYCO. J. Z. has been supported by the NSFC under Grant No. 61078001.
DOI: 10.1103/PhysRevLett.108.023005

Citations: 57
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