Investigation of dephasing rates in an interacting Rydberg gas

Abstract

We experimentally and theoretically investigate the dephasing rates of the coherent evolution of a resonantly driven pseudo spin emersed in a reservoir of pseudo spins. The pseudo spin is realized by optically exciting 87 Rb atoms to a Rydberg state. Hence, the upper spin states are coupled via the strong van der Waals interaction. Two different experimental techniques to measure the dephasing rates are shown: the 'rotary echo' technique known from nuclear magnetic resonance physics and electromagnetically induced transparency. The experiments are performed in a dense frozen Rydberg gas, either confined in a magnetic trap or in an optical dipole trap. Additionally, a numerical simulation is used to analyse the dephasing in the rotary echo experiments.

arXiv comment13 pages, 5 figures

References in corpus (12)

• Dipole Blockade and Quantum Information Processing in Mesoscopic Atomic Ensembles
• Fast quantum gates for neutral atoms
• Coherent optical detection of highly excited Rydberg states using electromagnetically induced transparency
• Local Blockade of Rydberg Excitation in an Ultracold Gas
• Suppression of Excitation and Spectral Broadening Induced by Interactions in a Cold Gas of Rydberg Atoms
• Evidence for coherent collective Rydberg excitation in the strong blockade regime
• Consequences of Zeeman Degeneracy for van der Waals Blockade between Rydberg Atoms
• Quantum critical behavior in strongly interacting Rydberg gases
• Rabi flopping between ground and Rydberg states with dipole-dipole atomic interactions
• Electromagnetically induced transparency of an interacting cold Rydberg ensemble
• An echo experiment in a strongly interacting Rydberg gas
• Electro-optic control of atom-light interactions using Rydberg dark-state polaritons

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