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Deterministic Preparation of a Tunable Few-Fermion System

2011; American Association for the Advancement of Science; Volume: 332; Issue: 6027 Linguagem: Inglês

10.1126/science.1201351

1095-9203

Friedhelm Serwane, G. Zürn, Thomas Lompe, T. B. Ottenstein, A. N. Wenz, Selim Jochim,

Quantum and electron transport phenomena

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.