Dresden 2011 – scientific programme
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A: Fachverband Atomphysik
A 29: Ultracold Atoms: Trapping and Cooling 2 (with Q)
A 29.9: Talk
Friday, March 18, 2011, 12:30–12:45, HSZ 02
Reconstructing the Wigner function of an atomic ensemble — •Roman Schmied and Philipp Treutlein — Departement Physik, Universität Basel, Schweiz
At the core of quantum information technology lies the deterministic and robust generation of entanglement. The accurate measurement of this entanglement is central for advancing the techniques for entanglement generation. For this we have developed a novel method which allows us to reconstruct the Wigner function of the total pseudospin of a large ensemble of ultracold atoms from tomographic data. We illustrate the method with experimental data from a spin-squeezed cloud of 87Rb atoms.