2019/08/31 by Wenchao Ge, M. Suhail Zubairy
Computer Science · Physics and Astronomy · #Adiabatic process #Atomic physics #Bound state #Cold Atom Physics and Bose-Einstein Condensates #Nanometre #Nanoscopic scale #Optics #Physics #Quantum Information and Cryptography #Quantum mechanics #Quantum optics and atomic interactions #cond-mat.quant-gas #quant-ph
paper · pdf · doi:10.1103/physreva.101.023403
published as Phys. Rev. A 101, 023403 (2020) · 6 pages, 5 figures, manuscript updated
arxiv created 2019/11/27 · openalex publication_date 2020/02/05 · arxiv updated 2020/02/12 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Optical potentials have been a versatile tool for the study of atomic motions and many-body interactions in cold atoms. Recently, optical subwavelength single barriers were proposed to enhance the atomic interaction energy scale, which is based on nonadiabatic corrections to Born-Oppenheimer potentials. Here we present a study for creating an alternative landscape of nonadiabatic potentials---multiple barriers with subwavelength spacing at tens of nanometers. To realize these potentials, spatially rapid-varying dark states of atomic \mathrm\ensuremathΛ configurations are formed by controlling the spatial intensities of the driving lasers. As an application, we show that bound states of very long lifetimes on the order of seconds can be realized. Imperfections and experimental realizations of the multiple barriers are also discussed.