Nearest-Neighbor Detection of Atoms in a 1D Optical Lattice by Fluorescence Imaging

Abstract

We overcome the diffraction limit in fluorescence imaging of neutral atoms in a sparsely filled one-dimensional optical lattice. At a periodicity of 433 nm, we reliably infer the separation of two atoms down to nearest neighbors. We observe light induced losses of atoms occupying the same lattice site, while for atoms in adjacent lattice sites, no losses due to light induced interactions occur. Our method points towards characterization of correlated quantum states in optical lattice systems with filling factors of up to one atom per lattice site.

4 pages, 4 figures

References in corpus (5)

• Quantum phase transition from a superfluid to a Mott insulator in a gas of ultracold atoms
• Coherent Quantum Optical Control with Subwavelength Resolution
• Submicrometer position control of single trapped neutral atoms
• Addressing individual atoms in optical lattices with standing-wave driving fields
• Inserting two atoms into a single optical micropotential

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• An algorithm to factorize quantum walks into shift and coin operations
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• Detecting atoms trapped in an optical lattice using a tapered optical nanofiber
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• Non-Hermitian gravitational effects on Bose-Einstein condensate