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.
- Publication:
-
Science
- Pub Date:
- April 2011
- DOI:
- 10.1126/science.1201351
- arXiv:
- arXiv:1101.2124
- Bibcode:
- 2011Sci...332..336S
- Keywords:
-
- PHYSICS;
- Condensed Matter - Quantum Gases;
- Quantum Physics
- E-Print:
- 8 pages, 6 figures