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IonQ Cracks Quantum Error Correction with Real-Time Quantum Decoder
The test covered 408 logical qubits and more than 31.5 million operations, IonQ said, as it works toward practical fault-tolerant quantum computing.
- On Tuesday, Maryland-headquartered IonQ announced a new real-time quantum error decoder that runs on a single CPU, allowing quantum computers to fix errors continuously without pausing operations.
- Quantum error correction typically creates a bottleneck where computation pauses to rectify errors, but IonQ's architecture processes syndrome measurements and corrections efficiently on standard hardware.
- During the evaluation, 408 logical qubits across 88 memory blocks executed more than 31.5 million individual quantum operations, with the decoder adding only 0.02 percent to the total computation.
- Shares of IonQ surged Wednesday, gaining as much as 15% in premarket trading, while Rigetti Computing and D-Wave rose more than 4% ahead of the open.
- The company plans to build a quantum computer with 256 physical qubits for industrial-scale usage; "Empirical evidence like this supports our vision for fault tolerance," added Jon Gable, Vice President at IonQ Architecture.
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US stock markets start Wednesday in the red after oil prices rebounded. At the company level, Ionq, which works with quantum computers, is rushing after a technological breakthrough.
IonQ Stock Rallies as Single-CPU Decoder Clears a Quantum Bottleneck
New York, September 23, 2026, 09:15 (EDT) IonQ traded at $44.86 at 08:45 EDT, up 10.1% from Tuesday's close. The decoder handled compiled workloads spanning 408 logical qubits on one standard CPU. The premarket price implies roughly 39 times IonQ's 2026 revenue-guidance midpoint. IonQ, Inc. (NYSE:IONQ) shares climbed 10.1% to $44.86 in Wednesday premarket trading.…
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Total News Sources17
Leaning Left1Leaning Right0Center2Last UpdatedBias Distribution67% Center
Bias Distribution
- 67% of the sources are Center
67% Center
L 33%
C 67%
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