Rabi oscillations and excitation trapping in the coherent excitation of a mesoscopic frozen Rydberg gas

Rabi oscillations and excitation trapping in the coherent excitation of a mesoscopic frozen Rydberg gas. Reetz-Lamour, M., Amthor, T., Deiglmayr, J., & Weidemueller, M. Physical Review Letters, June, 2008. WOS:000257230500020
doi abstract bibtex

We demonstrate the coherent excitation of a mesoscopic ensemble of about 100 ultracold atoms to Rydberg states by driving Rabi oscillations from the atomic ground state. We employ a dedicated beam shaping and optical pumping scheme to compensate for the small transition matrix element. We study the excitation in a weakly interacting regime and in the regime of strong interactions. When increasing the interaction strength by pair state resonances, we observe an increased excitation rate through coupling to high angular momentum states. This effect is in contrast to the proposed and previously observed interaction-induced suppression of excitation, the so-called dipole blockade.

@article{reetz-lamour_rabi_2008-1,
	title = {Rabi oscillations and excitation trapping in the coherent excitation of   a mesoscopic frozen {Rydberg} gas},
	volume = {100},
	issn = {0031-9007},
	doi = {10.1103/PhysRevLett.100.253001},
	abstract = {We demonstrate the coherent excitation of a mesoscopic ensemble of about   100 ultracold atoms to Rydberg states by driving Rabi oscillations from   the atomic ground state. We employ a dedicated beam shaping and optical   pumping scheme to compensate for the small transition matrix element. We   study the excitation in a weakly interacting regime and in the regime of   strong interactions. When increasing the interaction strength by pair   state resonances, we observe an increased excitation rate through   coupling to high angular momentum states. This effect is in contrast to   the proposed and previously observed interaction-induced suppression of   excitation, the so-called dipole blockade.},
	number = {25},
	journal = {Physical Review Letters},
	author = {Reetz-Lamour, M. and Amthor, T. and Deiglmayr, J. and Weidemueller, M.},
	month = jun,
	year = {2008},
	note = {WOS:000257230500020},
}

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