Optical lattices for atom-based quantum microscopy

Abstract

We describe new techniques in the construction of optical lattices to realize a coherent atom-based microscope, comprised of two atomic species used as target and probe atoms, each in an independently controlled optical lattice. Precise and dynamic translation of the lattices allows atoms to be brought into spatial overlap to induce atomic interactions. For this purpose, we have fabricated two highly stable, hexagonal optical lattices, with widely separated wavelengths but identical lattice constants using diffractive optics. The relative translational stability of 12 nm permits controlled interactions and even entanglement operations with high fidelity. Translation of the lattices is realized through a monolithic electro-optic modulator array, capable of moving the lattice smoothly over one lattice site in 11 micros, or rapidly on the order of 100 ns.

Mapping the spatial distribution of entanglement in optical lattices

“…In contrast, we will develop our ideas by building on the experimental setup from Refs. [16,20], which traps two different species of atoms in two coexisting optical lattices, one of which can be moved. This setup combines a diffraction mask with a powerful microscope objective, which projects two similar triangular lattice patterns on its focal plane.…”

Critical entropies for magnetic ordering in bosonic mixtures on a lattice

“…Striking advances in experimental techniques (e.g., high controllability and tunability of Hamiltonian parameters) and, more recently, single site and single-particle imaging [3][4][5][6], brought forward the idea, originally proposed by Feynmann, of quantum simulation or emulation [7]. In the last decade, a considerable amount of theoretical and experimental research has been devoted to the objective of using ultracold lattice bosons and fermions to address many outstanding condensed matter problems via Hamiltonian modeling.…”

Tune-out wavelengths of alkali-metal atoms and their applications

“…Schemes of this type have been used for entropy transfer and controlled collisions between 87 Rb and 41 K [32][33][34]. For bichromatic optical lattice schemes, such as those discussed by Brickman Soderberg, et al [35,36], it could be useful to incorporate L B into the model configuration, so as to be able to move A and B completely independently. In another application, a Sr lattice at a 3 P 0 magic-zero wavelength was suggested for realization of quantum information processing [37].…”