Key PointsQuantum computing stocks went on a wild ride in 2025.IonQ is taking a unique approach that could set it up to win the quantum computing race.Rigetti's technology is much faster than IonQ's, ...

Another mega-round for a quantum computing company? This feels like a phase shift in the quantum computing ecosystem as everything gets more real ...

Physicists at Silicon Quantum Computing have developed what they say is the most accurate quantum computing chip ever engineered, after building a new kind of architecture.

One of the hottest pockets of the artificial intelligence (AI) realm in 2025 was quantum computing. Shares of pure-play quantum developers such as IonQ, Rigetti Computing, and D-Wave Quantum each ...

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Silicon Quantum Computing ("SQC"), a leader in quantum computing and quantum machine learning, has achieved a breakthrough that positions the ...

Quantum computing needs a sustainability initiative that benchmarks its carbon emissions throughout its entire life cycle ...

The problem is, Rigetti doesn't expect to book those revenues until H1 2026, and the company hasn't announced any other sales ...

A group of South Korean researchers has successfully developed an integrated quantum circuit chip using photons (light particles). It is a system capable of controlling eight photons using a photonic ...

The MarketWatch News Department was not involved in the creation of this content. The partnership with Nobel laureate John Martinis showcases a new generation of robust, scalable superconducting ...

D-Wave Quantum’s quantum annealing technology has demonstrated applicability in real-world use cases. Both stocks are trading at extremely rich valuations. Investors can consider taking small stakes ...