Commercial quantum computing will yield only a few direct winners, and current public startups may or may not become the largest. IonQ leads in trapped-ion technology with industry-low error rates — 99.99% two-qubit fidelity — and machines like Forte (36 physical qubits) and Tempo (64). IonQ already serves customers including Airbus, Hyundai, and the U.S. Air Force. Trapped-ion qubits achieve low errors by using ultra-stable laser pulses rather than microwaves, but that approach introduces speed and scalability bottlenecks: two-qubit laser gates take microseconds versus 10–20 nanoseconds for superconducting circuits. Superconducting competitors are narrowing the fidelity gap while leveraging higher volume.
"IonQ has historically led the quantum computing startup space, and it does have very impressive tech . It has the lowest error rates in the QC business, with 99.99% fidelity on two-qubit gates. As of today, it has Forte, with 36 physical qubits. It already has customers. Namely, algorithmic qubits . Airbus (OTCMKTS:EADSY ), Hyundai, and the U.S. Air Force. IonQ Tempo has 64"
"IonQ has a lower error rate than its competitors due to its trapped-ion being steered with ultra-stable laser pulses instead of the microwave pulses used in superconducting chips. However, that laser-steering approach comes with a trade-off that investors and technologists need to keep in mind: speed and scalability bottlenecks. A single two-qubit laser gate takes a few microseconds, whereas superconducting circuits finish the same operation in ~10-20 nanoseconds. When you finally do need millions of gates to run an error-corrected algorithm, total run-time balloons."
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