2009/03/19 by Alessandro Zenesini, A. Zenesini, Hans Lignier +9 · 1 citation
Computer Science · Physics and Astronomy · #Adiabatic process #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Diabatic #Jump #Measure (data warehouse) #Momentum (technical analysis) #Physics #Quantum Information and Cryptography #Quantum mechanics #Quantum optics and atomic interactions #Quantum tunnelling #Voltage #Zener diode #cond-mat.other #quant-ph
paper · pdf · doi:10.1103/physrevlett.103.090403
5 pages, 3 figures
arxiv created 2009/03/19 · openalex publication_date 2009/08/26 · arxiv updated 2015/05/13 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We report time-resolved measurements of Landau-Zener tunneling of Bose-Einstein condensates in accelerated optical lattices, clearly resolving the steplike time dependence of the band populations. Using different experimental protocols we were able to measure the tunneling probability both in the adiabatic and in the diabatic bases of the system. We also experimentally determine the contribution of the momentum width of the Bose condensates to the temporal width of the tunneling steps and discuss the implications for measuring the jump time in the Landau-Zener problem.