IonQ Error-Correction Test Lifts Quantum Computing ETF QTUM

IonQ announced an end-to-end real-time quantum error correction decoder that runs on a single standard central processing unit, eliminating the classical decoding delays that previously forced quantum hardware to pause during operations. The company verified the decoder across circuits simulating up to 408 logical qubits and more than 31.5 million quantum operations. IonQ also said its Superion 256 quantum computer will serve as the first on-premise quantum deployment at NVIDIA's Accelerated Quantum Research Center, linking directly to an NVIDIA GB200 NVL72 system via NVIDIA NVQLink. Shares of the quantum computing company jumped 4.8% in the morning session and were trading at $42.79, up 4.9% from the previous close. The stock is down 8.5% since the beginning of the year and trades 47.9% below its 52-week high of $82.09 from October 2025.

Intel CEO Lip-Bu Tan said at Splunk's .conf26 conference that CPUs, GPUs and quantum processors will likely work together across different applications, citing error correction as an area where the technology still needs to advance. Days later, IonQ said it had tested a real-time quantum error-correction decoder running on a single standard CPU, with the system tested on simulated workloads representing up to 408 logical qubits and more than 31.5 million operations. IonQ said the decoder added as little as 0.02% to execution time under standard operating-noise assumptions, though the research used simulated workloads rather than a quantum computer operating with 408 logical qubits, so it does not establish that the technology is ready for commercial-scale deployment. Still, the test illustrates how conventional computing could handle error correction while quantum processors perform specialized calculations. INTC shares rose 1.7% Tuesday to $123.86, while IonQ has drawn renewed attention from investors following the milestone, and the next catalyst is whether IonQ can demonstrate the decoder on increasingly large, real quantum systems.

B. Riley Securities is maintaining bullish ratings on IonQ, D-Wave Quantum and Rigetti Computing ahead of Quantum World Congress, betting that a shift in government policy from pure research toward commercialization could open a more meaningful revenue path for the quantum-computing sector. The firm kept Buy ratings with price targets of $100 for IonQ, $40 for D-Wave and $35 for Rigetti. Analyst Craig Ellis pointed to the Department of Energy's From Lab to Market session at the September 23-25 conference as a sign that federal policy may increasingly focus on moving quantum technologies into commercial applications. The event will also feature a two-hour National Quantum Updates session with more than 10 governments, participation from the White House Office of Science and Technology Policy, and back-to-back keynotes from Microsoft and IBM. B. Riley's thesis is sector-wide, but the report provides no fresh revenue forecasts, cash-flow estimates, technical milestones or new valuation work behind the three price targets, leaving the stocks dependent on long-term expectations rather than near-term financial evidence.