Skip to main content
Open Access Publications from the University of California

UC Santa Barbara

UC Santa Barbara Previously Published Works bannerUC Santa Barbara

Observation and Uses of Position-Space Bloch Oscillations in an Ultracold Gas.

  • Author(s): Geiger, Zachary A;
  • Fujiwara, Kurt M;
  • Singh, Kevin;
  • Senaratne, Ruwan;
  • Rajagopal, Shankari V;
  • Lipatov, Mikhail;
  • Shimasaki, Toshihiko;
  • Driben, Rodislav;
  • Konotop, Vladimir V;
  • Meier, Torsten;
  • Weld, David M
  • et al.

Published Web Location
No data is associated with this publication.

We report the observation and characterization of position-space Bloch oscillations using cold atoms in a tilted optical lattice. While momentum-space Bloch oscillations are a common feature of optical lattice experiments, the real-space center-of-mass dynamics are typically unresolvable. In a regime of rapid tunneling and low force, we observe real-space Bloch oscillation amplitudes of hundreds of lattice sites, in both ground and excited bands. We demonstrate two unique capabilities enabled by tracking of Bloch dynamics in position space: measurement of the full position-momentum phase-space evolution during a Bloch cycle, and direct imaging of the lattice band structure. These techniques, along with the ability to exert long-distance coherent control of quantum gases without modulation, may open up new possibilities for quantum control and metrology.

Many UC-authored scholarly publications are freely available on this site because of the UC's open access policies. Let us know how this access is important for you.

Item not freely available? Link broken?
Report a problem accessing this item