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A: Fachverband Atomphysik

A 24: Ultra-Cold Atoms, Ions and BEC II (with Q)

A 24.4: Vortrag

Donnerstag, 5. März 2009, 11:30–11:45, VMP 6 HS-C

Coherent control and matter wave interference of single atoms — •Andreas Steffen, Michał Karski, Leonid Förster, Jai-Min Choi, Tan Wang, Artur Widera, and Dieter Meschede — Institut für angewandte Physik, Bonn, Deutschland

We report on recent progress for coherent spin-dependent transport of neutral atoms, paving the way to creating entanglement via controlled collisions.

We store a small number of ultracold caesium atoms in a state-selective 1D optical lattice. We are able to manipulate and detect atoms with close to nearest-neighbor precision. By displacing the potentials for two spin states, vibrational sidebands appear in the microwave spectrum, which we have employed to cool the atoms to the vibrational ground state in the axial direction. We have also achieved coherent state-selective transport over multiple lattice sites. This opens up a number of applications, such as the single trapped atom interferometer and the quantum walk with a single atom.

We will present latest experimental results.