Study of surface potentials using resonant tunnelling of cold atoms in optical lattices

2012/09/18 by Vladyslav V. Ivanov, Vladyslav V Ivanov
Physics and Astronomy · #Amplitude #Cold Atom Physics and Bose-Einstein Condensates #Lattice (music) #Mechanical and Optical Resonators #Modulation (music) #Optical lattice #Quantum Electrodynamics and Casimir Effect #Quantum tunnelling #Range (aeronautics) #Surface (topology) #Ultracold atom #physics.atom-ph

paper · pdf · doi:10.1088/0953-4075/45/20/205004

published as J. Phys. B: At. Mol. Opt. Phys 45, 205004 (2012) · 7 pages, 6 figures

openalex publication_date 2012/09/18 · arxiv created 2012/11/02 · arxiv updated 2015/06/12 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06

Abstract

We study the feasibility of precision measurements of surface potentials at micrometre distances using resonant tunnelling of cold atoms trapped in vertical optical lattices. A modulation of an amplitude of the lattice potential induces atomic tunnelling among the lattice sites. The resonant modulation frequency corresponds to a difference of potential energy between lattice sites, which is defined by an external force, i.e. gravity. The vicinity of the surface alters the external potentials, and hence the resonant frequency. Application of this method allows the accurate study of Casimir-type potentials and improvement of the present experimental validity of the Newtonian gravitational potential at a distance range of 5–30 μm.

Citations

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