Antiferromagnetic Heisenberg Spin Chain of a Few Cold Atoms in a One-Dimensional Trap
2015; American Physical Society; Volume: 115; Issue: 21 Linguagem: Inglês
10.1103/physrevlett.115.215301
ISSN1092-0145
AutoresSimon Murmann, F. Deuretzbacher, G. Zürn, J. Bjerlin, S. M. Reimann, L. Santos, Thomas Lompe, Selim Jochim,
Tópico(s)Strong Light-Matter Interactions
ResumoWe report on the deterministic preparation of antiferromagnetic Heisenberg spin chains consisting of up to four fermionic atoms in a one-dimensional trap. These chains are stabilized by strong repulsive interactions between the two spin components without the need for an external periodic potential. We independently characterize the spin configuration of the chains by measuring the spin orientation of the outermost particle in the trap and by projecting the spatial wave function of one spin component on single-particle trap levels. Our results are in good agreement with a spin-chain model for fermionized particles and with numerically exact diagonalizations of the full few-fermion system.Received 4 July 2015DOI:https://doi.org/10.1103/PhysRevLett.115.215301© 2015 American Physical Society
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