Pathfinder PIC Ion Chip

CAD model for the Pathfinder PIC chip, a photonic-integrated trapped-ion chip built to support a hybrid-locality quantum computing architecture.

Architecture overview

Two planar ion-trap arrays sit above a silicon-nitride photonic integrated circuit. Each array holds a 3-ion ¹³⁸Ba⁺ Coulomb crystal:

• one communication ion that interfaces with the photonic network
• two memory ions that store computational states

The chip combines two forms of entanglement:

• Local entanglement inside each array, using motional Mølmer–Sørensen (MS) gates
• Non-local entanglement between arrays, using photon-mediated time-bin entanglement and teleportation

Repository contents

Opening the file

.f3d is the native Autodesk Fusion 360 format. To open it:

1. Open Fusion 360
2. File → Open → From My Computer
3. Select Ba138_v2.f3d

A read-only viewer is available via the Autodesk Viewer (https://viewer.autodesk.com).

Status

This design is an early-stage sketch; exact powers, waists, crosstalk budgets, and many fabrication-level details are still being worked out. Feedback from PIC designers and trapped-ion experimentalists is welcome and encouraged.

Contact

Jonathan Feasby — Pathfinder Quantum Technologies