Key facts
- Quantum computing stocks rallied on Wednesday.
- IonQ announced a breakthrough in real-time quantum error-correction.
- IonQ will install its quantum computing technology at Nvidia's Accelerated Quantum Research Center.
- IonQ's stock popped as much as 13% before paring gains.
- Infleqtion, D-Wave Quantum, Quantum Computing Inc, and Rigetti Computing shares rose 7%.
Quantum computing stocks experienced a significant rally on Wednesday, with IonQ Inc. at the forefront following its announcement of a technological breakthrough and a new partnership with Nvidia. The company reported advancements in "real-time quantum error-correction," a critical milestone for the development of fault-tolerant quantum computing. This development was further bolstered by news that IonQ's technology will be installed at Nvidia's Accelerated Quantum Research Center, aiming to accelerate the creation of large-scale quantum supercomputers. The surge in IonQ's stock, which climbed as much as 13% before settling higher, also lifted its peers in the sector, including Infleqtion, D-Wave Quantum, Quantum Computing Inc, and Rigetti Computing, all of which saw gains of approximately 7% as markets opened. Retail traders, who had previously fueled a rally in quantum stocks in 2025, showed renewed interest, contributing to the day's momentum. Quantum machines leverage qubits to perform complex calculations at speeds exceeding classical computers, but are highly sensitive to errors, a challenge IonQ's breakthrough aims to address. Nicolas Delfosse, a researcher at IonQ, highlighted the significance of validating real-time decoding across hundreds of logical qubits and millions of logical operations, noting that the decoder's operation on a single CPU offers a practical path to commercial-scale fault-tolerant quantum computing.