Ground state cooling of atoms in optical lattices

Abstract

We propose two schemes for cooling bosonic and fermionic atoms that are trapped in a deep optical lattice. The first scheme is a quantum algorithm based on particle number filtering and state dependent lattice shifts. The second protocol alternates filtering with a redistribution of particles by means of quantum tunnelling. We provide a complete theoretical analysis of both schemes and characterize the cooling efficiency in terms of the entropy. Our schemes do not require addressing of single lattice sites and use a novel method, which is based on coherent laser control, to perform very fast filtering.

arXiv comment12 pages, 7 figures

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Cited by in corpus (32)

• Ultracold atomic gases in optical lattices: mimicking condensed matter physics and beyond
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• Fermi-Hubbard physics with atoms in an optical lattice
• Monte Carlo study of two-dimensional Bose-Hubbard model
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• Cooling and entangling ultracold atoms in optical lattices
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