High-Resolution Imaging of Trapped Ions for Scalable Quantum Computing
Andreas Jechow, Erik W. Streed, B. G. Norton, M.J. Petrasiunas, D. Kielpinski · 2011
A microfabricated phase Fresnel lens was used to image trapped ytterbium ions. This scalable architecture yields ion spot sizes of 440nm (FWHM), the highest imaging resolution ever achieved with an atom in free space.