2004/01/31 by Gráinne Duffy, G. Duffy, A. S. Parkins +7 · 4 citations
Computer Science · Physics and Astronomy · #Atomic physics #Bose–Einstein condensate #Cold Atom Physics and Bose-Einstein Condensates #Diffusion #Mechanics #Momentum (technical analysis) #Momentum diffusion #Physics #Planck constant #Quantum #Quantum Information and Cryptography #Quantum chaos and dynamical systems #Quantum mechanics #Rotor (electric) #cond-mat.soft
paper · pdf · doi:10.1103/physreve.70.056206
6 pages, 6 figures
arxiv created 2004/05/31 · openalex publication_date 2004/11/16 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We report measurements of the early-time momentum diffusion for the atom-optical delta-kicked rotor. In this experiment a Bose-Einstein condensate provides a source of ultracold atoms with an ultranarrow initial momentum distribution, which is then subjected to periodic pulses (or "kicks") using an intense far-detuned optical standing wave. We characterize the effect of varying the effective Planck's constant for the system, while keeping all other parameters fixed. The observed behavior includes both quantum resonances (ballistic energy growth) and antiresonances (re-establishment of the initial state). Our experimental results are compared with theoretical predictions.