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Quantum Information and Measurement (QIM)

Towards Quantum State Engineering with Strontium Atoms in State-Dependent Optical Lattices

Stepan Snigirev, Annie Jihyun Park, A. Heinz, Stephan Wissenberg, Jean Dalibard, Immanuel Bloch, Sebastian Blatt

Published Jan 1, 2017• 5 citations
Publisher

Abstract

We report on the construction of a new experiment with the aim of studying quantum degenerate gases of strontium in optical lattices and propose a technique to engineer quantum states using a state-dependent optical tweezer.
DOI
10.1364/qim.2017.qt4a.2

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Degenerate quantum gases of alkaline-earth-like elements open new opportunities in research areas ranging from molecular physics to the study of strongly correlated systems. These experiments exploit the rich electronic structure of these elements, which is markedly different from the one of other species for which quantum degeneracy has been attained. Specifically, alkaline-earth-like atoms, such as strontium, feature metastable triplet states, narrow intercombination lines, and a non-magnetic, closed-shell ground state. This review covers the creation of quantum degenerate gases of strontium and the first experiments performed with this new system. It focuses on laser-cooling and evaporation schemes, which enable the creation of Bose-Einstein condensates and degenerate Fermi gases of all strontium isotopes, and shows how they are used for the investigation of optical Feshbach resonances, the study of degenerate gases loaded into an optical lattice, as well as the coherent creation of Sr_2 molecules.