USA Rare Earth enlists Pasqal and Riven to pursue quantum-aided rare-earth separation

USA Rare Earth has entered a strategic partnership with quantum-computing company Pasqal and industrial-chemistry specialist Riven Systems to develop rare-earth separation technology. The project is aimed at a difficult and commercially consequential segment of the supply chain: turning mixed rare-earth material into individual separated oxides. 3

The collaboration does not represent a new separation plant, an operating process or additional oxide output. It is a technology-discovery program built around Riven’s automated minerals-separation laboratory, Pasqal’s neutral-atom quantum processing unit and USA Rare Earth’s processing expertise. Its central objective is to identify extractant molecules that bind to rare-earth elements more effectively than available alternatives. 3

Extractants are central to solvent-extraction separation, where small differences in chemical affinity must be exploited to separate chemically similar elements. USA Rare Earth said Riven is expected to conduct thousands of automated experiments, creating real chemical data on extractant selectivity. That data would train machine-learning models, while Pasqal would benchmark quantum machine-learning models against classical models trained on the same laboratory results. The intended outcome is a faster way to select and optimize extractants for separation work. 3

The potential prize is substantial, but the distinction between discovery and deployment matters. USA Rare Earth says better-performing extractants could allow smaller, lower-cost and less energy-intensive processing facilities. Those are aims of the work, not demonstrated operating outcomes. The announcement provides no commercial-scale recovery results, plant design, capital requirement, construction decision, commissioning date or estimate of future separated-oxide production. 3

That leaves multiple hurdles between a promising molecule and reliable domestic processing. Candidates identified in a laboratory must be validated across relevant feedstocks and operating conditions, then integrated into a flowsheet that can consistently produce saleable individual oxides. A commercial operator must also establish reagent availability, operating costs, throughput, separation performance and environmental handling. Quantum models may improve the search process, but they do not by themselves prove that a chosen extractant will perform economically at industrial scale.

The initiative nevertheless addresses a real strategic weakness in the Western rare-earth chain. Mixed rare-earth carbonate from upstream operations must be separated before individual oxides can reach metal, alloy and magnet production. USA Rare Earth identified separation as the principal challenge outside Asia and specifically pointed to Chinese strength in processing heavy rare earths including dysprosium, terbium and yttrium. 3

The pressure to build alternatives has become more acute as China’s export-control policy approaches another decision point. A suspension covering six October 2025 export-control announcements is scheduled to expire on November 10 unless it is extended, modified or replaced. The measures reach beyond a simple product restriction, spanning additional rare-earth controls, processing equipment, technology and certain foreign-made products, while uncertainty has already complicated Western procurement planning. 2

For USA Rare Earth, the partnership therefore has value as an attempt to improve the chemistry underlying a future separation platform, rather than as evidence that the midstream bottleneck has already been solved. The next indicators will be whether the companies disclose specific extractant candidates, comparative results against conventional approaches, pilot-scale validation and a route from laboratory findings to a repeatable commercial process. Until then, the program is best viewed as early-stage process innovation with potentially important implications for domestic supply security, but unproven economics and scale.