Kavli Affiliate: David Erickson
| First 5 Authors: Anthony Ransford, Anthony Ransford, , ,

| Summary:
We report on Quantinuum Helios, a 98-qubit trapped-ion quantum processor based on the quantum charge-coupled device (QCCD) architecture. Helios features $^137$Ba$^+$ hyperfine qubits, all-to-all connectivity enabled by a rotatable ion storage ring connecting two quantum operation regions by a junction, speed improvements from parallelized operations, and a new software stack with real-time compilation of dynamic programs. Averaged over all operational zones in the system, we achieve average infidelities of $2.5(1)times10^-5$ for single-qubit gates, $7.9(2)times10^-4$ for two-qubit gates, and $4.8(6)times10^-4$ for state preparation and measurement, none of which are fundamentally limited and likely able to be improved. These component infidelities are predictive of system-level performance in both random Clifford circuits and random circuit sampling, the latter demonstrating that Helios operates well beyond the reach of classical simulation and establishes a new frontier of fidelity and complexity for quantum computers.
| Search Query: arXiv Query: search_query=au:”Erickson David”&id_list=&start=0&max_results=3
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