Prospects for site-resolved imaging of ultracold fermions in optical lattices

Ultracold quantum gases in optical lattices are a perfect toy model to simulate condensed matter Hamiltonians. Recent success in imaging bosonic alkali atoms in-situ has enabled many new possibilities of studying such systems.\footnote{Gericke \textit{et al.}, \textit{Nature Physics} \textbf{4}, 949 (2008)}$^,$\footnote{Bakr \textit{et al.},\textit{Nature} \textbf{462}, 74 (2009)}$^,$\footnote{Sherson \textit{et al.}, \textit{Nature} \textbf{467},68 (2010)} By using fermionic species instead, a different class of Hamiltonians could be implemented, which are believed to exhibit new physics like d-wave superfluidity. We discuss the physical and technical challenges associated with the site-resolved imaging of fermionic alkali species, as well as our approach to detect single Lithium atoms using resonant two-photon ionization (UV+NIR)