Implementation of a full-stack neutral-atom quantum computer 

Research on neutral atom quantum computing is actively being carried out in both academia and industry ^1,2, aiming toward practical applications. We report the current development status of our Rubidium-based neutral atom quantum computing system  in Okazaki, Japan.

The system follows a modular architecture, developed through collaboration with industry partners.Key modules of the system  include a trap array and atom rearrangement module for organizing qubit positions, a Raman cooling module for motional initialization, a microwave module for global qubit rotations, and a Rydberg excitation module enabling fast, high-fidelity entangling gates.

We also describe progress in atom preparation and measurement, starting from atom loading in a magneto-optical trap to imaging of single-atom trapping in an optical tweezers array. This prosses is supported by a functional integrated laser module that incorporates frequency stabilization, optical switching, and shutter control, ensuring reliable and stable operation of the entire system.

In addition, we present our experimental environment, located in a temperature-, humidity-, and particle-controlled cleanroom. All laser parameters, including output power, beam profile, frequency, and temperature at multiple positions along the optical paths, are actively monitored to ensure the stability and reproducibility required for high-fidelity quantum control and for reliable, long-term operation.

Together, these developments establish a robust foundation for a scalable, high-performance neutral atom quantum processor.