Oratomic, a quantum computing start-up based in Pasadena, California, raised $300m in a Series A round announced on 7 July 2026. ARCH Venture Partners, Spark Capital and Khosla Ventures co-led the round.
Bezos Expeditions, Index Ventures, General Catalyst, Lowercarbon Capital, Bain Capital, Formation and Nebular also invested, along with individual investors David and Scott Aaronson. The company listed further backers including Les Kohn, Baiju Bhatt, Infleqtion, Genius Ventures, 7i Capital, Global Frontier Investments, Wilson Hill and Caltech.
Oratomic did not disclose a valuation. Pulse 2.0 reported an estimated valuation of around $1.5bn, a figure the company has not confirmed.
“Oratomic's founding team all previously believed that commercially useful quantum computing was far away”Dolev Bluvstein, CEO, Oratomic
What Oratomic does
Oratomic is trying to build a fault-tolerant quantum computer, one that can correct its own errors well enough to run long calculations. Its machines use neutral atoms held in focused laser beams, known as optical tweezers, which can be moved around during a computation. The company says these reconfigurable arrays allow a simpler approach to quantum error correction.
The company came out of stealth in March 2026 with research carried out with Caltech scientists, according to The Quantum Insider. That work suggested a useful, error-corrected machine might need around 10,000 reconfigurable neutral-atom qubits, far fewer than the millions often assumed. Pulse 2.0 put the range at 10,000 to 20,000 qubits.
Dolev Bluvstein is chief executive. Co-founder Manuel Endres has demonstrated arrays of about 6,000 trapped atomic qubits, The Quantum Insider reported, and the physicist John Preskill is among the researchers on the founding team. The company describes itself as a small, focused team; The Quantum Insider listed its size at 11 to 50 staff.
A bet on going straight to fault tolerance
Oratomic said it is not pursuing intermediate products or commercial systems along the way, and will put its effort into the fault-tolerant machine alone.
Bluvstein told The Quantum Insider that the founding team had all previously believed commercially useful quantum computing was far away. At the company's launch in March he said it was plausible, though not guaranteed, that a fault-tolerant quantum computer would exist by the end of the decade. The company is aiming for commercial utility before 2030.
Vinod Khosla, whose firm co-led the round, wrote on X that the company was on its way to running Shor's algorithm, the factoring method that would threaten much of today's public-key cryptography if run on a large enough machine.
What the money is for
Oratomic said the funding will go to high-performance quantum hardware fabrication, research on algorithms and fault-tolerant architecture, and a significant expansion of its physics, hardware engineering and control-systems teams. The company said it is hiring generalists, scientists, engineers and technicians, and that a background in quantum computing is not required.
The Quantum Insider, citing FinSMEs, reported that the company is also working on optimising cryogenic chip packaging.
No earlier funding rounds were reported by the company or in coverage of the Series A.
Company website: oratomic.com