Controlled Generation of Coherent Matter Currents Using a Periodic Driving Field

2008/05/04 by C. E. Creffield, Fernando Sols, F. Sols
Computer Science · Physics and Astronomy · #Boson #Cold Atom Physics and Bose-Einstein Condensates #Field (mathematics) #Floquet theory #Lattice (music) #Nonlinear system #Optical lattice #Physics #Quantum #Quantum Information and Cryptography #Quantum electrodynamics #Quantum mechanics #Quantum optics #Quantum tunnelling #Statistical physics #Strong Light-Matter Interactions #Superfluidity #cond-mat.other

paper · pdf · doi:10.1103/physrevlett.100.250402

published as Phys. Rev. Lett. 100, 250402 (2008). · 4.1 pages, 4 eps figures

arxiv created 2008/05/04 · openalex publication_date 2008/06/25 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We study the effect of a strong, oscillating driving field on the dynamics of ultracold bosons held in an optical lattice. Modeling the system as a Bose-Hubbard model, we show how the driving field can be used to produce and maintain a coherent atomic current by controlling the phase of the intersite tunneling processes. We investigate both the stroboscopic and time-averaged behavior using Floquet theory, and demonstrate that this procedure provides a stable and precise method of controlling coherent quantum systems.

Citations

• Driven quantum transport on the nanoscale
• Quantum phase transition from a superfluid to a Mott insulator in a gas of ultracold atoms
• Bloch Oscillations and Mean-Field Effects of Bose-Einstein Condensates in 1D Optical Lattices
• Dressed matter waves
• Localization and delocalization of ultracold bosonic atoms in finite optical lattices
• Location of crossings in the Floquet spectrum of a driven two-level system
• The cold atom Hubbard toolbox
• Repulsively bound atom pairs in an optical lattice