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Abstract: We demonstrate spatially resolved, coherent excitation of Rydberg atoms on anatom chip. Electromagnetically induced transparency EIT is used toinvestigate the properties of the Rydberg atoms near the gold coated chipsurface. We measure distance dependent shifts ~10 MHz of the Rydberg energylevels caused by a spatially inhomogeneous electric field. The measured fieldstrength and distance dependence is in agreement with a simple model for theelectric field produced by a localized patch of Rb adsorbates deposited on thechip surface during experiments. The EIT resonances remain narrow < 4 MHz andthe observed widths are independent of atom-surface distance down to ~20 \mum,indicating relatively long lifetime of the Rydberg states. Our results open theway to studies of dipolar physics, collective excitations, quantum metrologyand quantum information processing involving interacting Rydberg excited atomson atom chips.



Autor: Atreju Tauschinsky, Rutger M. T. Thijssen, S. Whitlock, H. B. van Linden van den Heuvell, R. J. C. Spreeuw

Fuente: https://arxiv.org/



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