IonQ shares surge on quantum error breakthrough

IonQ announced the quantum computing industry's first real-time error decoder, sending its stock up more than 5% and lifting the broader sector.

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Sep 23, 2026

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IonQ shares surge on quantum error breakthrough

IonQ announced the quantum computing industry's first real-time error decoder, sending its stock up more than 5% and lifting the broader sector.

In brief

IonQ announced the quantum computing industry's first real-time error decoder, sending its stock up more than 5% and lifting the broader sector. IonQ demonstrated the quantum computing industry's first real-time error decoder, a breakthrough that fixes computer errors as they happen and sent its shares up more than…

IonQ announces quantum breakthrough

IonQ announced Tuesday it demonstrated the quantum computing industry's first end-to-end real-time quantum error decoder, a major milestone for the sector.

How the decoder works

The decoder allows a single standard computer processor to find, fix and decode computer errors as they happen while running continuously in the background.

Solving an industry problem

Solving an industry problem

Previous quantum systems became easily overwhelmed fixing errors, causing delays. The successful test addresses this significant bottleneck in the industry.

IonQ's research lead responds

Nicolas Delfosse, quantum research lead at IonQ, called validating real-time decoding across hundreds of logical qubits an important milestone for commercial-scale quantum computing.

“Successfully validating real-time decoding across hundreds of logical qubits and over millions of logical operations is an important milestone.”

Stock market reaction

IonQ shares rose more than five percent in morning trading Wednesday after surging over ten percent before the bell. Quantum stocks broadly rose in premarket trading.

IonQ's position strengthens

IonQ partners with Amazon Web Services, Nvidia and AstraZeneca. The company recently raised full-year revenue guidance after acquiring semiconductor manufacturer SkyWater Technology.

The main idea

IonQ demonstrated the quantum computing industry's first real-time error decoder, a breakthrough that fixes computer errors as they happen and sent its shares up more than five percent.

Read the original on CNBC

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