Speaker
Description
Alongside high-fidelity logic gates and quantum-error correction (QEC), scalability remains a primary benchmark for practical quantum computation (QC). Shuttling-based trapped-ion architectures represent one of the most advanced platforms for executing quantum algorithms. However, implementations relying on linear ion traps have limited scalability and significant shuttling overhead. Transitioning to efficient large-scale processing requires the operation of junction traps capable of reliable, coherent and low-excitation ion shuttling.
We report on the development of a new trapped-ion QC device incorporating an X-junction trap. The trap design was developed and optimized using SITConS, a custom software package integrating a meshing program and an electrostatic solver together with a trajectory simulation to optimize both the trap geometry and its operating voltages {1}. The trap was then manufactured in our in-house cleanroom using selective laser-induced etching of a glass wafer, followed by sputter coating with a thin gold layer.
With device assembly nearly complete, we are initiating efforts to demonstrate robust single- to multi-ion transport through and around the junction, alongside two-qubit entangling gates. Establishing these core functionalities will enable distributed entanglement, laying the foundation for scalable quantum computing and QEC protocols.
{1} A. Conta et al. "Toolchain for shuttling trapped-ion qubits in segmented traps", AVS Quantum Sci. 8, 023801 (2026)