IonQ Inc. (IONQ) shares are moving higher in Tuesday's after-hours session after the company announced a milestone in fault-tolerant quantum computing.

IonQ Demonstrates Real-Time Quantum Error Decoder

IonQ announced it demonstrated successful testing of the first end-to-end real-time quantum error correction decoder that runs on a standard CPU.

The company showed a single standard processor can handle quantum error correction in real time, removing a bottleneck that has forced quantum computers to pause while errors are fixed.

“Successfully validating real-time decoding across hundreds of logical qubits and over millions of logical operations is an important milestone. Moreover, the fact that our decoder runs on a single CPU provides a practical path to commercial-scale fault-tolerant quantum computing,” said Nicolas Delfosse, quantum research lead at IonQ.

IonQ tested its dual-decoder system on benchmark circuits simulating up to 408 logical qubits and more than 31.5 million quantum operations. Under typical noise conditions, the company said the decoder added as little as 0.02% in extra run time.

Wedbush on Tuesday reiterated IonQ with an Outperform rating and price target of $75. IonQ has a consensus Buy rating with an average price target of $64, per MarketDash data.

IONQ Shares Jump After Hours

IONQ Price Action: IonQ shares were up 7.83% after-hours on Tuesday, trading at $43.93 at the time of publication, according to market data.