2009/07/31 by C. S. E. van Ditzhuijzen, Atreju Tauschinsky, H. B. van Linden van den Heuvell · 3 citations
Physics and Astronomy · #Amplitude #Atomic physics #Bessel function #Cold Atom Physics and Bose-Einstein Condensates #Dipole #Electric dipole transition #Electric field #Field (mathematics) #Floquet theory #Ionization #Magnetic dipole #Physics #Quantum electrodynamics #Quantum mechanics #Quantum optics and atomic interactions #Rydberg formula #Semiclassical physics #Spectroscopy and Quantum Chemical Studies #Stark effect #quant-ph
paper · pdf · doi:10.1103/physreva.80.063407
arxiv created 2009/10/05 · openalex publication_date 2009/12/03 · arxiv updated 2010/04/19 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We have observed St"uckelberg oscillations in the dipole-dipole interaction between Rydberg atoms with an externally applied radio-frequency field. The oscillating rf field brings the interaction between cold Rydberg atoms in two separated volumes into resonance. We observe multiphoton transitions when varying the amplitude of the rf field and the static electric field offset. The angular momentum states we use show a quadratic Stark shift, which leads to a fundamentally different behavior than linearly shifting states. Both cases are studied theoretically using the Floquet approach and are compared. The amplitude of the sidebands, related to the interaction strength, is given by the Bessel function in the linearly shifting case and by the generalized Bessel function in the quadratically shifting case. The oscillatory behavior of both functions corresponds to St"uckelberg oscillations, an interference effect described by the semiclassical Landau-Zener-St"uckelberg model. The measurements prove coherent dipole-dipole interaction during at least 0.6 \ensuremathμs.