Related Experiment Video
Updated: Aug 18, 2026

Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving
Published on: March 30, 2017
Strongly inhibited transport of a degenerate 1D Bose gas in a lattice
C D Fertig1, K M O'Hara, J H Huckans
1National Institute of Standards and Technology, Gaithersburg, Maryland 20899-8424, USA.
Abstract:
We report the observation of strongly damped dipole oscillations of a quantum degenerate 1D atomic Bose gas in a combined harmonic and optical lattice potential. Damping is significant for very shallow axial lattices (0.25 photon recoil energies), and increases dramatically with increasing lattice depth, such that the gas becomes nearly immobile for times an order of magnitude longer than the single-particle tunneling time. Surprisingly, we see no broadening of the atomic quasimomentum distribution after damped motion. Recent theoretical work suggests that quantum fluctuations can strongly damp dipole oscillations of a 1D atomic Bose gas, providing a possible explanation for our observations.
Related Concept Videos
Lattice Energies of Ionic Crystals
Trends in Lattice Energy: Ion Size and Charge
The Born-Haber Cycle
Real Gases: Effects of Intermolecular Forces and Molecular Volume Deriving Van der Waals Equation
Behavior of Gas Molecules: Molecular Diffusion, Mean Free Path, and Effusion
Van der Waals Equation
First, the attractive forces between molecules, which are stronger at higher densities and reduce the pressure, are considered by adding to the pressure a term equal to the square of the molar density multiplied by a positive coefficient a. Second, the volume...

