QuamCore has raised $26 million in funding to build a one-million-qubit quantum computer system.
It’s a big day for QuamCore, a deep-tech startup tackling quantum computing’s hardest scalability challenges, to raise its Series A round. That brings total funding to $35 million.
Sentinel Global led the round, with participation from Arkin Capital, as well as existing investors Viola Ventures, Earth & Beyond Ventures, Surround Ventures, Rhodium, and Quantum Leap. The Israel Innovation Authority contributed a $4 million non-dilutive grant.
While today’s most advanced superconducting quantum systems, like those from Google and IBM, can support ~5,000 qubits per cryostat, QuamCore has developed a fully designed and simulated architecture capable of scaling to 1 million qubits – in a single cryostat. This milestone, long considered out of reach, fundamentally changes the economics of quantum computing by eliminating the need for massive multi-cryostat infrastructure.
“From day one, we focused on the minimum viable system to unlock real-world quantum
advantage – and that number is 1 million qubits,” said Alon Cohen, CEO of QuamCore, in a statement. “We chose to radically rethink the architecture of the most mature and performant platform: superconducting qubits. The result is a blueprint that can scale, stay compact, and remain aligned with where the industry is already headed.”
“QuamCore’s team has done what no one else has: built a practical, scalable roadmap to a
million-qubit machine using superconducting technology — the most advanced and commercially promising platform in quantum today,” said Dror Sharon, partner at Sentinel
Global, in a statement. “Their architectural innovation is a leap forward, not just in hardware, but in how we think about scaling quantum systems in the real world.”
“Quantum computing is now governed by scaling limits, not qubit fidelity. By embedding
ultra‑low‑power superconducting control logic inside the cryostat, QuamCore removes the
thermal bottleneck that throttles today’s systems and charts a credible path to a
single‑cryostat, million‑qubit machine. That density will rewrite quantum economics and
unlock markets we expect to be worth trillions of dollars. We’re proud to back this team,” said Nir Arkin, CEO of Arkin Capital, in a statement.
QuamCore’s innovation lies in tightly integrating superconducting digital control logic directly into the cryostat. This reduces the cabling burden by orders of magnitude and eliminates the primary thermal bottleneck that has blocked large-scale adoption. The design also includes built-in error correction, a critical feature for achieving fault-tolerant quantum computing. QuamCore’s founding team blends deep expertise in quantum information, superconducting devices, and large-scale semiconductor systems. With this funding, the company will move from design to fabrication of its first-generation processors, establish a dedicated quantum lab, and scale up operations.
“This funding allows us to accelerate both chip production and prototype integration,” Cohen added. “The quantum industry is maturing – and with our approach, superconducting qubits will remain in the lead.”
QuamCore is pioneering Massive Scaling in quantum computing, pushing the limits of what’s possible. The company’s patented superconducting quantum processor architecture enables fault-tolerant, scalable systems capable of managing millions of qubits. With an architecture-first approach, QuamCore is making large-scale, economically viable quantum computing a reality, unlocking real-world impact across industries.
Asked what was the inspiration for the company, Cohen said in a message to GamesBeat, “We started QuamCore with a very specific question: What’s the minimum system you’d need to unlock real quantum advantage?”
“That number – 1 million qubits – became our target,” said Cohen. “Not as a moonshot, but as an engineering problem. The inspiration wasn’t to build a quantum computer in general – it was to build one that could actually scale. That meant rethinking the architecture from the ground up, without discarding the most mature platform: superconducting qubits.”
In layman’s terms, QuamCore said you can think of today’s quantum systems like giant server farms that can only run a few apps – they take up entire rooms, require extreme cooling, and are wired together like a data center from the 1980s.
“We designed a system that can do much more with far less,” Cohen said. By embedding the control logic inside the same deep-cold environment as the qubits, we remove most of the wiring, reduce heat, and eliminate the need for huge multi-unit setups. That’s what makes it possible to run millions of qubits in a single system – and that’s the scale where quantum starts to become truly useful.”
The company started in 2022, and our headquarters are in Herzliya, Israel.
The company has a team of 15 (10 employees, 5 contractors) with deep backgrounds in quantum information, superconducting hardware, and large-scale semiconductor systems.
Cohen said many teams are working on improving fidelity, coherence, or error correction – all important, but none solve the core scaling problem. Most of today’s systems can only support a few thousand qubits across multiple cryostats, he said.
“Our architecture is designed from day one for scale. We’re the first to demonstrate a viable path to 1 million qubits in a single cryostat, using superconducting qubits,” Cohen said. “That changes the economics of quantum computing and opens the door to real commercial impact – not years from now, but on the timescale of fabrication.”