Rabi oscillations between ground and Rydberg states and van der Waals blockade in a mesoscopic frozen Rydberg gas. Reetz-Lamour, M., Deiglmayr, J., Amthor, T., & Weidemüller, M. New Journal of Physics, 10(4):045026, 2008.
Rabi oscillations between ground and Rydberg states and van der Waals blockade in a mesoscopic frozen Rydberg gas [link]Paper  doi  abstract   bibtex   
We present a detailed analysis of our recent observation of synchronous Rabi oscillations between the electronic ground state and Rydberg states in a mesoscopic ensemble containing roughly 100 ultracold atoms (Reetz-Lamour et al submitted, Preprint 0711.4321). The mesoscopic cloud is selected out of a sample of laser-cooled Rb atoms by optical pumping. The atoms are coupled to a Rydberg state with principal quantum number around 30 by a two-photon scheme employing flat-top laser beams. The influence of residual spatial intensity fluctuations as well as sources of decoherence such as redistribution to other states, radiative lifetime and laser bandwidth are analysed. The results open up new possibilities for the investigation of coherent many-body phenomena in dipolar Rydberg gases. As an example we demonstrate the van der Waals blockade, a variant of the dipole blockade, for a mesoscopic atom sample.
@article{reetz-lamour_rabi_2008,
	title = {Rabi oscillations between ground and {Rydberg} states and van der {Waals} blockade in a mesoscopic frozen {Rydberg} gas},
	volume = {10},
	issn = {1367-2630},
	url = {http://stacks.iop.org/1367-2630/10/i=4/a=045026},
	doi = {10.1088/1367-2630/10/4/045026},
	abstract = {We present a detailed analysis of our recent observation of synchronous Rabi oscillations between the electronic ground state and Rydberg states in a mesoscopic ensemble containing roughly 100 ultracold atoms (Reetz-Lamour et al submitted, Preprint 0711.4321). The mesoscopic cloud is selected out of a sample of laser-cooled Rb atoms by optical pumping. The atoms are coupled to a Rydberg state with principal quantum number around 30 by a two-photon scheme employing flat-top laser beams. The influence of residual spatial intensity fluctuations as well as sources of decoherence such as redistribution to other states, radiative lifetime and laser bandwidth are analysed. The results open up new possibilities for the investigation of coherent many-body phenomena in dipolar Rydberg gases. As an example we demonstrate the van der Waals blockade, a variant of the dipole blockade, for a mesoscopic atom sample.},
	language = {en},
	number = {4},
	urldate = {2016-08-26},
	journal = {New Journal of Physics},
	author = {Reetz-Lamour, M. and Deiglmayr, J. and Amthor, T. and Weidemüller, M.},
	year = {2008},
	pages = {045026},
}

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