Year: 2016
Type: article
Abstract: We demonstrate site-resolved imaging of individual bosonic atoms in a Hubbard-regime two-dimensional optical lattice with a short lattice constant of 266 nm. To suppress the heating by probe light with the 1 S 0 – 1 P 1 transition of the wavelength λ = 399 nm for high-resolution imaging and preserve atoms at the same lattice sites during the fluorescence imaging, we simultaneously cool atoms by additionally applying narrow-line optical molasses with the 1 S 0 – 3 P 1 transition of the wavelength λ = 556 nm. We achieve a low temperature of , corresponding to a mean oscillation quantum number along the horizontal axes of 0.22(4) during the imaging process. We detect, on average, 200 fluorescence photons from a single atom within a 400 ms exposure time, and estimate a detection fidelity of 87(2)%. The realization of a quantum gas microscope with enough fidelity for Yb atoms in a Hubbard-regime optical lattice opens up the possibilities for studying various kinds of quantum many-body systems such as Bose and Fermi gases, and their mixtures, and also long-range-interacting systems such as Rydberg states.
Source: New Journal of Physics
Institution: Kyoto University
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,610
Awards: Variety and universality of bulk-edge correspondence in topological phases: From solid state physics to cold atoms, イッテルビウム原子量子気体顕微鏡による次世代量子シミュレーターの開発, New stage of research of novel quantum condensed phase developed by ultimate control and measurement of ytterbium quantum gases in an optical lattice, Link between microwave and optical frequency via a highly stable optical cavity
OpenAlex ID: W2170166604