Scalable Multilayer Architecture of Assembled Single-Atom Qubit Arrays in a Three-Dimensional Talbot Tweezer Lattice

We report on the realization of a novel platform for the creation of large-scale 3D multilayer configurations of planar arrays of individual neutral-atom qubits: a microlens-generated Talbot tweezer lattice that extends 2D tweezer arrays to the third dimension at no additional costs. We demonstrate the trapping and imaging of rubidium atoms in integer and fractional Talbot planes and the assembly of defect-free atom arrays in different layers. The Talbot self-imaging effect for microlens arrays constitutes a structurally robust and wavelength-universal method for the realization of 3D atom arrays with beneficial scaling properties. With more than 750 qubit sites per 2D layer, these scaling properties imply that 10 000 qubit sites are already accessible in 3D in our current implementation. The trap topology and functionality are configurable in the micrometer regime. We use this to generate interleaved lattices with dynamic position control and parallelized sublattice addressing of spin states for immediate application in quantum science and technology.

Automated summary

We have developed a novel platform for creating large-scale 3D multilayer configurations of neutral-atom qubits. Our method, based on a microlens-generated Talbot tweezer lattice, extends 2D tweezer arrays to the third dimension without additional costs. We demonstrate the trapping and imaging of rubidium atoms in different Talbot planes and the assembly of defect-free atom arrays in multiple layers. This approach allows for the realization of 3D atom arrays with scalable properties, enabling access to more than 10,000 qubit sites in our current implementation.