Portable trapped‑ion system with integrated photonics and modular optical subsystems

We present progress towards a portable trapped-ion quantum information system leveraging integrated photonics and modular optical subsystems. We have used this system to perform single qubit gate operations with fidelity over 99.9% and present progress towards high fidelity two qubit gate operations. The Raman laser system used to control Zeeman qubits in our system is compact and is open-sourced via our PyOpticL library on GitHub, along with many other modular optical subsystems including: Modulation Transfer Spectroscopy (MTS), Doppler cooling, qubit state detection, polarization-gradient cooling (PGC), and Fiber noise cancellation.

We also report progress towards delivering this light via tightly focused integrated photonic grating couplers to address individual ions within a chain for a scalable hybrid logical qubit architecture.

Together these approaches dramatically reduces the size, weight, power and cost of the trapped ion system, enabling entirely new applications in portable quantum sensing and scalable quantum computing.