Ultracold atoms in an optical lattice with dynamically variable periodicity
| Autor: | Al-Assam, S., Williams, R. A., Foot, C. J. |
|---|---|
| Rok vydání: | 2010 |
| Předmět: | |
| Zdroj: | Phys. Rev. A 82, 021604(R) (2010) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevA.82.021604 |
| Popis: | The use of a dynamic "accordion" lattice with ultracold atoms is demonstrated. Ultracold atoms of $^{87}$Rb are trapped in a two-dimensional optical lattice, and the spacing of the lattice is then increased in both directions from 2.2 to 5.5 microns. Atoms remain bound for expansion times as short as a few milliseconds, and the experimentally measured minimum ramp time is found to agree well with numerical calculations. This technique allows an experiment such as quantum simulations to be performed with a lattice spacing smaller than the resolution limit of the imaging system, while allowing imaging of the atoms at individual lattice sites by subsequent expansion of the optical lattice. Comment: 4 pages, 3 figures. Minor changes made and references updated |
| Databáze: | arXiv |
| Externí odkaz: |
|