Abstract
We have demonstrated preparing and rotating single neutral rubidium atoms in an optical ring lattice generated by a spatial light modulator, inserting two atoms into a single microscopic optical potential efficiently by dynamically reshaping the optical dipole trap, trapping single atoms in a blue detuned optical bottle beam trap, and confining single atoms into the Lamb-Dicke regime by combining red and blue detuned optical potentials. In combination with the manipulation of internal states of single atoms, the study is opening a way for research in the field of quantum information processing and quantum simulation. In this paper we review the past works and discuss the prospects.
Highlights
We have demonstrated preparing and rotating single neutral rubidium atoms in an optical ring lattice generated by a spatial light modulator, inserting two atoms into a single microscopic optical potential efficiently by dynamically reshaping the optical dipole trap, trapping single atoms in a blue detuned optical bottle beam trap, and confining single atoms into the Lamb-Dicke regime by combining red and blue detuned optical potentials
We demonstrate trapping single neutral rubidium atoms in the ring lattice generated by a computer controlled spatial light modulator (SLM), and present several kinds of manipulations of single atom array
Collisions leading to atom loss in the presence of near-resonant laser light are governed by the long-range resonant dipole-dipole interaction including the radiative escape (RE) and fine-structure changing collisions (FCCs)
Summary
The SLM (Holoeye, HEO 1080P) has a resolution of 1920× 1080 pixels, and each pixel size is 8 μm×8 μm Controlled by computers, it could transform a single collimated Gaussian beam into arbitrary intensity pattern with first-order diffraction efficiency of 40%. The corresponding modes consist of 2l petals (see Figure 2), with each petal as an optical dipole trap when the laser is red detuned from the atom resonance. For l = 0 there is not phase jump, corresponding to the Gaussian mode which is a single trap with the same optical axis as the ring lattice. Loaded from the 87Rb magneto-optical trap (MOT) at the typical temperature of 100 μK, the generated ring lattice at 830 nm wavelength is strong focused to a waist of 2.1 μm by a commercial microscope objective (NA = 0.38, LINOS) placed outside the vacuum chamber.
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