2016/08/31 by Jiating Ni, Wa Kun Lam, Siamak Dadras +4
Computer Science · Physics and Astronomy · #Computer science #Nonlinear Dynamics and Pattern Formation #Physics #Quantum #Quantum chaos and dynamical systems #Quantum mechanics #Ratchet #Ratchet effect #Resonance (particle physics) #State (computer science) #Work (physics) #physics.atom-ph #stochastic dynamics and bifurcation
paper · pdf · doi:10.1103/physreva.94.043620
published as Phys. Rev. A 94, 043620 (2016) · 6 pages, 8 figures
arxiv created 2016/08/31 · openalex publication_date 2016/10/11 · arxiv updated 2016/10/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We demonstrate quantum resonance ratchets created with Bose-Einstein condensates exposed to pulses of an off-resonant standing light wave. We show how some of the basic properties of the ratchets are controllable through the creation of different initial states of the system. In particular, our results prove that through an appropriate choice of initial state it is possible to reduce the extent to which the ratchet state changes with respect to time. We develop a simple theory to explain our results and indicate how ratchets might be used as part of a matter-wave interferometer or quantum random walk experiment.