title: Deterministic preparation of a tunable few-fermion system.
abstract: 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.
authors.affiliation: Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, 69120 Heidelberg, Germany. friedhelm.serwane@mpi-hd.mpg.de
authors.forename: F
authors.initials: F
authors.lastname: Serwane
authors.forename: G
authors.initials: G
authors.lastname: Zürn
authors.forename: T
authors.initials: T
authors.lastname: Lompe
authors.forename: T B
authors.initials: TB
authors.lastname: Ottenstein
authors.forename: A N
authors.initials: AN
authors.lastname: Wenz
authors.forename: S
authors.initials: S
authors.lastname: Jochim