2011/10/06 by S. D. Hogan, J. A. Agner, Josef A. Agner +7 · 8 citations
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Quantum optics and atomic interactions #Quantum, superfluid, helium dynamics #physics.atom-ph #quant-ph
paper · pdf · doi:10.1103/physrevlett.108.063004
published as Phys. Rev. Lett. 108, 063004 (2012) · 5 pages, 5 figures
arxiv created 2011/10/06 · openalex publication_date 2012/02/09 · arxiv updated 2012/02/23 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The coherent interaction between ensembles of helium Rydberg atoms and microwave fields in the vicinity of a solid-state co-planar waveguide is reported. Rydberg-Rydberg transitions, at frequencies between 25 GHz and 38 GHz, have been studied for states with principal quantum numbers in the range 30 - 35 by selective electric-field ionization. An experimental apparatus cooled to 100 K was used to reduce effects of blackbody radiation. Inhomogeneous, stray electric fields emanating from the surface of the waveguide have been characterized in frequency- and time-resolved measurements and coherence times of the Rydberg atoms on the order of 250 ns have been determined.