Deterministic Preparation of a Tunable Few-Fermion System

2011/01/31 by F. Serwane, Friedhelm Serwane, G. Zürn +6 · 10 citations
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Computer science #Fermion #Particle physics #Physics #Quantum and electron transport phenomena #Quantum chaos and dynamical systems #cond-mat.quant-gas #quant-ph

paper · pdf · doi:10.1126/science.1201351

published as Science 332, 6027 (2011) · 8 pages, 6 figures

arxiv created 2011/04/14 · openalex publication_date 2011/04/14 · arxiv updated 2015/03/17 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

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.

Citations

• Single Atoms in an Optical Dipole Trap: Towards a Deterministic Source of Cold Atoms
• Many-body physics with ultracold gases
• Electronic structure of quantum dots
• Quantum phase transition from a superfluid to a Mott insulator in a gas of ultracold atoms
• Collisional Stability of a Three-Component Degenerate Fermi Gas
• Probing the Superfluid to Mott Insulator Transition at the Single Atom Level
• Direct Observation of Sub-Poissonian Number Statistics in a Degenerate Bose Gas

Cited by

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• Multiparticle instability in a spin-imbalanced Fermi gas
• Escape dynamics of many hard disks
• Nonequilibrium properties of an atomic quantum dot coupled to a Bose-Einstein condensate
• Experimentally Accessible Invariants Encoded in Interparticle Correlations of Harmonically Trapped Ultra-cold Few-Fermion Mixtures
• Infinite barriers and symmetries for a few trapped particles in one dimension
• Spatial tomography of individual atoms in a quantum gas microscope
• Attractive statistical forces and Pauli crystal formation in trapped Fermi gases