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Journal Article

Deterministic preparation of a tunable few-fermion system


Serwane,  Friedhelm
Cellular Biophysics, Max Planck Institute for Medical Research, Max Planck Society;
Biophysical Chemistry, Institute of Physical Chemistry, University of Heidelberg, 69120 Heidelberg, Germany;

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Serwane, F., Zürn, G., Lompe, T., Jochim, S., Ottenstein, T. B., & Wenz, A. N. (2011). Deterministic preparation of a tunable few-fermion system. Science, 332(6027), 336-338. doi:10.1126/science.1201351.

Cite as: http://hdl.handle.net/21.11116/0000-0000-7E1E-3
Systems consisting of few interacting fermions are the building blocks of matter, with atoms and nuclei being the most prominent examples. We have created a few-body quantum system with complete control over its quantum state using ultracold fermionic atoms in an optical dipole trap. Ground-state systems consisting of 1 to 10 particles are prepared with fidelities of ∼90%. We can tune the interparticle interactions to arbitrary values using a Feshbach resonance and have observed the interaction-induced energy shift for a pair of repulsively interacting atoms. This work is expected to enable quantum simulation of strongly correlated few-body systems.