Atom Computing closes $100M Series C plus $100M CHIPS Act award for fault-tolerant quantum
Atom Computing announced on June 16, 2026, that it has raised more than $300 million total, comprising a $100 million Series C led by Third Point Ventures (with DCVC and Cisco Investments participating) and a parallel $100 million Letter of Intent from the U.S. Department of Commerce under the CHIPS and Science Act. The federal award grants the U.S. government a minority, non-controlling equity stake in the company. Berkeley, California-based Atom Computing specializes in neutral-atom quantum computers using optically trapped arrays, which the company and investors view as one of the most scalable paths to fault tolerance.
The milestones underlying the capital influx: Atom Computing has exceeded 1,200 fully connected qubits in its AC1000 system (a landmark for universal gate-based quantum); demonstrated quantum error correction on neutral atom hardware (one of only two companies industry-wide); advanced to Stage B of DARPA's Quantum Benchmarking Initiative; and installed the world's first commercial quantum computer with logical qubits in partnership with Microsoft. The company also sold its first commercial on-premises system to QuNorth (a Nordic initiative) in 2025.
The government backing signals quantum's role in national security and industrial competitiveness. The Commerce Department is distributing $2 billion in CHIPS Act R&D awards across multiple quantum modalities (neutral atom, silicon-spin, superconducting, photonic, trapped ion) to diversify the U.S. quantum ecosystem. Atom's award joins similar investments to Infleqtion ($100M), Rigetti, D-Wave, Quantinuum, PSIQuantum, and others—each receiving minority equity stakes, creating a novel public-private ownership structure.
For architects: This hybrid public-private model accelerates fault-tolerant timelines while signaling government conviction in neutral-atom scalability. Atom's dual capital sources de-risk the path to logical-qubit production systems. Watch for real-world utility applications (drug discovery, materials science, logistics optimization) to emerge within 18–24 months; early adopters in aerospace, defense, and pharma are already pilot-testing systems. The CHIPS Act equity stakes also imply longer government commitment and potential procurement preferences for U.S.-backed quantum platforms.
Sources
- Primary source
- Atom Computing Raises $100M In Series C Funding Round
“The parallel $100 million federal LOI represents government equity investment in exchange for a minority, non controlling stake.”
- Atom Computing Signs Letter of Intent for $100 Million in U.S. Quantum Funding
“The federal government's intended support stands alongside continued backing from Atom Computing's early-stage and institutional investors.”
- Quantum Computing Report
“Led by Third Point Ventures—with active syndication from DCVC, Cisco Investments—the capital influx is structured to scale on-premises hardware delivery and expand dedicated go-to-market teams for enterprise and national security sectors.”