Coherent collisional spin dynamics in optical lattices

Details Coherent collisional spin dynamics in optical lattices Coherent collisional spin dynamics in optical lattices

2005-05-19

arxiv.org/abs/cond-mat/0505492v2

Phys. Rev. Lett. 95, 190405 (2005)

Physics

Condensed Matter

Other Condensed Matter

revised version; 4 pages, 5 figures

Scientific paper

10.1103/PhysRevLett.95.190405

We report on the observation of coherent, purely collisionally driven spin dynamics of neutral atoms in an optical lattice. For high lattice depths, atom pairs confined to the same lattice site show weakly damped Rabi-type oscillations between two-particle Zeeman states of equal magnetization, induced by spin changing collisions. This paves the way towards the efficient creation of robust entangled atom pairs in an optical lattice. Moreover, measurement of the oscillation frequency allows for precise determination of the spin-changing collisional coupling strengths, which are directly related to fundamental scattering lengths describing interatomic collisions at ultracold temperatures.

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