2008/03/10 by E. Kierig, U. Schnorrberger, A. Schietinger +3 · 9 citations
Physics and Astronomy · #Amplitude #Cold Atom Physics and Bose-Einstein Condensates #Double-well potential #Floquet theory #Nonlinear system #Parameter space #Parity (physics) #Physics #Quantum mechanics #Quantum optics and atomic interactions #Quantum tunnelling #Quantum, superfluid, helium dynamics #Symmetry (geometry) #quant-ph
paper · pdf · doi:10.1103/physrevlett.100.190405
4 pages, 5 figures
arxiv created 2008/03/10 · openalex publication_date 2008/05/14 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We report on the first direct observation of coherent control of single-particle tunneling in a strongly driven double-well potential. In our setup atoms propagate in a periodic arrangement of double wells allowing the full control of the driving parameters such as frequency, amplitude, and even the space-time symmetry. Our experimental findings are in quantitative agreement with the predictions of the corresponding Floquet theory and are also compared to the predictions of a simple two mode model. Our experiments reveal directly the critical dependence of coherent destruction of tunneling on the generalized parity symmetry.