Figure 1: Trapping and addressing in an optical lattice.
From: Robust site-resolvable quantum gates in an optical lattice via inhomogeneous control
(a) Atoms are trapped in a 3D lattice (blue), in the presence of a one-dimensional addressing lattice (green) that can be translated using an electro-optic modulator (EOM) and polarization beamsplitter (PBS). (b) Variation in the qubit transition frequency for sites in the trap lattice (blue dots). A narrow-band microwave pulse of appropriate frequency (red line) addresses atoms at resonant sites (red dots). Translation of the addressing lattice (blue circles) targets atoms at different sites (red circles). (c) Schematic of trap lattice sites in the x–y plane. A slight misalignment between the planes of the trap and addressing lattices ensures the presence of resonant sites (top red line and filled red circles) for any microwave frequency and position of the addressing lattice. Translating the addressing lattice along x allows sequential addressing of adjacent sites (bottom red lines and open red circles), for example, triplets of sites separated by exactly one period of the trap lattice as shown here.
