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

We present progress toward a portable trapped‑ion quantum information platform leveraging integrated photonics for on‑chip light delivery and modular, open-source 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 present 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 modular, integrated approaches substantially reduce the size, weight, power, and cost of trapped‑ion systems, opening the way to portable quantum sensors and scalable quantum processors.