Physics – Condensed Matter – Quantum Gases
Scientific paper
2010-01-08
Phys. Rev. Lett. 104, 200403 (2010)
Physics
Condensed Matter
Quantum Gases
4 pages, 5 figures
Scientific paper
10.1103/PhysRevLett.104.200403
Particles in a perfect lattice potential perform Bloch oscillations when subject to a constant force, leading to localization and preventing conductivity. For a weakly-interacting Bose-Einstein condensate (BEC) of Cs atoms, we observe giant center-of-mass oscillations in position space with a displacement across hundreds of lattice sites when we add a periodic modulation to the force near the Bloch frequency. We study the dependence of these "super" Bloch oscillations on lattice depth, modulation amplitude, and modulation frequency and show that they provide a means to induce linear transport in a dissipation-free lattice. Surprisingly, we find that, for an interacting quantum system, super Bloch oscillations strongly suppress the appearance of dynamical instabilities and, for our parameters, increase the phase-coherence time by more than a factor of hundred.
Danzl Johann G.
Haller Elmar
Hart Russell
Mark Manfred J.
Nägerl Hanns-Christoph
No associations
LandOfFree
Inducing Transport in a Dissipation-Free Lattice with Super Bloch Oscillations does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Inducing Transport in a Dissipation-Free Lattice with Super Bloch Oscillations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Inducing Transport in a Dissipation-Free Lattice with Super Bloch Oscillations will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-501968