On September 23, IONQ Inc. rose 11.22% overnight, trading at $45.6 per share, with turnover of $490,400. The surge was driven by two major catalysts released in quick succession.

First, IonQ announced the successful development and testing of what it calls the industry's first end-to-end real-time quantum error correction decoder, running on a single standard off-the-shelf CPU. The research team benchmarked the decoder using simulated circuits involving up to 408 logical qubits and over 31.5 million quantum operations. Under standard operational noise conditions, the additional runtime overhead introduced by decoding was as low as 0.02%. IonQ's Head of Quantum Research, Nicolas Delfosse, stated that this milestone provides a practical pathway toward commercial-scale fault-tolerant quantum computing by alleviating the classical computing bottleneck in quantum error correction.

Second, IonQ announced a strategic partnership with Seoul-based quantum software firm SDT, Inc. to deploy a Superion 256 quantum computer and silicon-vacancy quantum memory module to a customer in South Korea — marking the first entry of both the Superion 256 system and SiV module into the Korean market. SDT will construct a dedicated quantum manufacturing integration facility in Gumi, South Korea, handling system assembly, packaging, and commissioning. The two companies also plan to collaborate on a hybrid quantum-classical infrastructure project for cancer and biomedical research.

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