Entanglement interferometry for precision measurement of atomic scattering properties
Abstract
We report on a two-particle matter wave interferometer realized with pairs of trapped 87Rb atoms. Each pair of atoms is confined at a single site of an optical lattice potential. The interferometer is realized by first creating a coherent spin-mixture of the two atoms and then tuning the inter-state scattering length via a Feshbach resonance. The selective change of the inter-state scattering length leads to an entanglement dynamics of the two-particle state that can be detected in a Ramsey interference experiment. This entanglement dynamics is employed for a precision measurement of atomic interaction parameters. Furthermore, the interferometer allows to separate lattice sites with one or two atoms in a non-destructive way.
Cite
@article{arxiv.cond-mat/0310719,
title = {Entanglement interferometry for precision measurement of atomic scattering properties},
author = {Artur Widera and Olaf Mandel and Markus Greiner and Susanne Kreim and Theodor W. Hänsch and Immanuel Bloch},
journal= {arXiv preprint arXiv:cond-mat/0310719},
year = {2009}
}
Comments
4 pages, 5 figures