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

Area of Science:

• Quantum physics
• Atomic physics
• Optical physics

Background:

• Neutral atom arrays are promising platforms for quantum computing.
• Scaling neutral atom systems to large numbers of qubits is a key challenge.
• Current methods for creating 3D arrays often involve complex optical setups.

Purpose of the Study:

• To demonstrate a novel, cost-effective method for generating large-scale 3D neutral-atom qubit arrays.
• To extend 2D tweezer arrays into the third dimension using the Talbot effect.
• To enable new functionalities for quantum simulations and computing.

Main Methods:

• Utilized a microlens-generated Talbot tweezer lattice to create 3D configurations.
• Trapped and imaged rubidium atoms in integer and fractional Talbot planes.
• Assembled defect-free atom arrays across multiple layers with configurable trap topology.

Main Results:

• Demonstrated the Talbot self-imaging effect for creating robust, wavelength-universal 3D atom arrays.
• Achieved over 750 qubit sites per 2D layer, with 10,000 qubit sites accessible in 3D.
• Configured interleaved lattices with dynamic position control and parallelized sublattice addressing.

Conclusions:

• The Talbot tweezer lattice offers a scalable and robust platform for 3D neutral-atom arrays.
• This technology provides a pathway to significantly increase qubit numbers for quantum applications.
• The configurable trap topology and addressing schemes open new avenues in quantum science and technology.