Our Neutral Atom Quantum Processor Testbed is focused on advancing optical technologies for scalable quantum computing. We develop and integrate new optical devices and control techniques to enable precise, large-scale manipulation of neutral atom arrays. The testbed fosters collaboration between atomic physicists and optical scientists, emphasizing the co-design of neutral atom architectures and integrated photonic systems. Using Rubidium-87 atoms, the system is designed with flexible optical access to enable rapid prototyping and testing of new optical control approaches. By innovating in optical modulation, device integration, and control strategies, we aim to build a foundation for Megaqubit-scale devices that can power utility-scale quantum applications.

This project is supported by NIST award 60NANB23D202.

This quantum control testbed centers on a single nitrogen-vacancy (NV) center in diamond and its surrounding nuclear spins in the carbon lattice. The system integrates an NV center with a solid immersion lens and an on-chip microwave antenna, coupled to a cryogenic confocal microscope and an open-source FPGA control system (ARTIQ). The combination of optical access and long spin coherence times in color center qubits offers a promising platform for scalable quantum networks. With this testbed, we plan to investigate problems in quantum noise spectroscopy, dynamical decoupling and control, open quantum systems, cluster state tomography and entanglement verification, and machine learning for quantum system characterization.

The project is supported by NSF award PHY-GRS-2233120 and NIST award 60NANB23D202.