`Stückelberg interferometry' with ultracold molecules

Details `Stückelberg interferometry' with ultracold molecules `Stückelberg interferometry' with ultracold molecules

2007-04-04

arxiv.org/abs/0704.0653v1

Phys. Rev. Lett. 99, 113201 (2007)

Physics

Condensed Matter

Other Condensed Matter

4 pages, 5 figures

Scientific paper

10.1103/PhysRevLett.99.113201

We report on the realization of a time-domain `St\"uckelberg interferometer', which is based on the internal state structure of ultracold Feshbach molecules. Two subsequent passages through a weak avoided crossing between two different orbital angular momentum states in combination with a variable hold time lead to high-contrast population oscillations. This allows for a precise determination of the energy difference between the two molecular states. We demonstrate a high degree of control over the interferometer dynamics. The interferometric scheme provides new possibilities for precision measurements with ultracold molecules.

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