TLDR
- DARPA selected IBM to move into Stage C, the final phase of its Quantum Benchmarking Initiative.
- Stage C means independent experts will directly test IBM’s quantum hardware rather than just review plans.
- IonQ, Australia’s Diraq, and Atom Computing also advanced to Stage C alongside IBM.
- Quantinuum was left off the Stage C list despite being viewed as a technical leader in the field.
- Stage C participants could receive up to $300 million if their systems perform as expected.
IBM stock dipped slightly on Thursday, even as the company landed a win from the U.S. government. The move was small, but the news behind it was bigger than the price action suggested.
International Business Machines Corporation, IBM
The Defense Advanced Research Projects Agency, known as DARPA, named IBM one of the companies advancing to Stage C of its Quantum Benchmarking Initiative. That’s the final and toughest stage of the program.
Stage C is a big jump from where IBM stood before. Independent experts from the agency will now directly test IBM’s quantum hardware instead of just reviewing paperwork and plans.
IonQ stock fell about 3% the same day, even though the company also made the Stage C cut. Quantinuum stock dropped roughly 6%, and that one actually makes more sense given its news.
What Stage C Actually Means
DARPA launched the Quantum Benchmarking Initiative back in 2024. The goal is simple on paper: figure out if someone can build an industrially useful, error-corrected quantum computer by 2033.
Getting to Stage C is not a small accomplishment. IBM already passed Stage A and Stage B, which covered research plans and risk strategies.
Now comes the hard part. DARPA’s independent verification team will test IBM’s hardware, systems engineering, and architecture directly.
IonQ, Diraq, and Atom Computing also made the cut this round. They join Microsoft and PsiQuantum, who already qualified last year through a separate pilot track.
There’s real money attached too. Stage C participants could receive up to $300 million from the government if their designs hold up under testing.
IBM is aiming to deliver a fault-tolerant quantum computer by 2029. “IBM is ready for that test,” said Oliver Dial, the company’s quantum systems VP.
The Quantinuum Question
One name stood out by its absence. Quantinuum, the Honeywell spinout that went public in June, didn’t make the Stage C list.
That’s notable because Quantinuum is often described as a technical leader in quantum computing. A recent study from Germany’s JĆ¼lich Supercomputing Centre even found its Helios processor beat IBM chips in certain error-correction tasks.
Quantinuum hasn’t been dropped from the program, though. A spokesperson told Barron’s the company is actively discussing a Stage C scope of work with DARPA while finishing its Stage B contract.
Honeywell stock slipped about 1% on the day, while Quantinuum’s drop was closer to 6%. Microsoft stock barely budged, up less than 1%.
IBM’s quantum computers are already being used by more than 340 organizations spanning finance, healthcare, and government work. The company also pointed to last year’s Quantum Starling announcement as part of its broader progress.
Jay Gambetta, director of IBM Research, framed the Stage C selection as proof of concept. “Advancing to the third stage of DARPA’s Quantum Benchmarking Initiative validates the strength of IBM’s path to building a fault-tolerant quantum computer,” he said.
DARPA’s program isn’t structured as a head-to-head competition between companies. That separates it from a $215 million quantum initiative the Energy Department rolled out last month.
Quantinuum, for its part, says it remains on track to deliver useful quantum systems by the start of the next decade. The company said it looks forward to continuing close work with DARPA going forward.
Get 3 Free Stock Ebooks
Discover top-performing stocks in AI, Crypto, and Technology with expert analysis.
- Top 10 AI Stocks - Leading AI companies
- Top 10 Crypto Stocks - Blockchain leaders
- Top 10 Tech Stocks - Tech giants
