Such a large atom arrangement could eventually serve as a platform for a quantum computer with error correction.ģD optical lattices have been around for decades. The team’s 3D tweezer lattice has sites for 10,000 atoms, but with some straightforward modifications, the system could reach 100,000 atoms. Now a team has created a new type of 3D lattice by combining optical tweezers-points of focused light that trap atoms-with an optical phenomenon known as the Talbot effect. Researchers have produced 3D lattices of trapped atoms for possible quantum computing tasks, but the standard technology doesn’t allow much control over atom spacing. Thanks to the Talbot effect, the focal plane pattern is reproduced at other parallel planes-also seen in cross section as vertical lines of red or white dots. Light passing through the array creates a plane of bright spots at the focal plane, which appears here in cross section as a vertical line with two red dots, right of center. The calculated intensity pattern from laser light after transmission through a microlens array, as seen in a vertical slice along the laser beam axis.
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