Observing Zitterbewegung in Ultracold Atoms

Details Observing Zitterbewegung in Ultracold Atoms Observing Zitterbewegung in Ultracold Atoms

2007-11-21

arxiv.org/abs/0711.3270v2

Phys. Rev. Lett. 100, 153002 (2008)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 5 figures. Added references

Scientific paper

10.1103/PhysRevLett.100.153002

We propose an optical lattice scheme which would permit the experimental observation of Zitterbewegung (ZB) with ultracold, neutral atoms. A four-level "tripod" variant of the usual setup for stimulated Raman adiabatic passage (STIRAP) has been proposed for generating non-Abelian gauge fields [1]. Dirac-like Hamiltonians, which exhibit ZB, are simple examples of such non-Abelian gauge fields; we show how a variety of them can arise, and how ZB can be observed, in a tripod system. We predict that the ZB should occur at experimentally accessible frequencies and amplitudes.

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