Proposal for achieving very low entropies in optical lattice systems

Details Proposal for achieving very low entropies in optical lattice systems Proposal for achieving very low entropies in optical lattice systems

2011-08-02

arxiv.org/abs/1108.0628v1

Physics

Condensed Matter

Quantum Gases

5.2 pages, 7 figures. Includes supplementary information (3 pages, 4 figures). MOV animation provided as ancillary file

Scientific paper

A major motivation for cold atom experiments is the search for quantum ground states such as antiferromagnets and d-wave superfluids. The primary obstacle to this task is the difficulty of cooling to sufficiently low temperatures. We propose a way to achieve very low temperatures and entropies ($\sim 0.03k_B$ per particle) by trapping fermions in a corral formed from another species of atoms. The Fermi system can then be used as a heat sink, or it can be adiabatically evolved into other desired states. In particular, we suggest methods for generating antiferromagnetism using this technique.

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