공고 • May 22
Infleqtion Strengthens Neutral-Atom Quantum Computing Platform with New Technical Breakthroughs
Infleqtion highlighted recent quantum computing advances that strengthen the company’s progress toward utility-scale, fault-tolerant quantum computing: the release of resource-superstaq, a new open-source architecture-level resource estimation package; a record dual-species rubidium-cesium entangling gate; a new theory preprint co-authored by Professor Mark Saffman, Infleqtion’s Chief Scientist for Quantum Information, showing a path to neutral-atom entangling-gate fidelity beyond 99.9%; and a static magnetic-field approach to sub-Doppler cooling and optical atom transport. Together, the advances demonstrate the strength of Infleqtion’s full-stack approach to neutral-atom quantum computing, combining hardware-aware software, quantum error correction-enabling architectures, high-fidelity dual-species operations, gate-design theory for lower physical error rates, and scalable atom motion. By tightly coupling hardware development, quantum error correction, resource estimation, compilation and application design, Infleqtion is working to shorten the timeline to transformative quantum computing. The announced capabilities are designed to reduce resource overhead, support more efficient magic-state production, advance high-fidelity entangling operations, and enable fast, in-place syndrome measurement for scalable fault-tolerant systems. Open-Source Resource Estimation for Fault-Tolerant Application Planning Infleqtion has open-sourced resource-superstaq, the newest addition to the suite of tools and packages within Infleqtion’s commercial Superstaq quantum software platform. The technical preprint is available at Resource Estimation via Efficient Compilation of Key Quantum Primitives. Quantum resource estimation is a critical element of modern quantum application development, enabling developers to extrapolate the quantum computing resources, including qubit count and circuit runtime, needed to execute an application at scale. Comparing these estimates with publicly available hardware roadmaps is one of the most direct methods for evaluating timelines for commercial-scale quantum solutions. The new open-source package provides a practical on-ramp for customers, collaborators and researchers preparing applications for Infleqtion’s neutral-atom quantum computers. By estimating the resources required to execute fault-tolerant workloads on Infleqtion-relevant neutral-atom architectures, resource-superstaq gives users clearer insight into how their applications are expected to perform on Infleqtion systems, including projected qubit requirements, runtime and sensitivity to key compilation and error-correction assumptions. The tool also supports Infleqtion’s hardware and architecture development by helping evaluate how design choices such as atom movement, measurement zones, multi-species arrays and QEC implementation strategies affect application-level performance. Because implementation and evaluation of neutral-atom hardware design decisions require substantial theoretical modeling and device engineering, resource-superstaq is designed to support a rapid design iteration cycle. The tool enables Infleqtion to efficiently explore the design space for fault-tolerant neutral-atom quantum computers and pair effective physical architectures and QEC-enabling middleware with high-impact applications. By making resource-superstaq openly available, Infleqtion is giving customers, collaborators and the broader quantum research community a clearer view into how fault-tolerant quantum applications will perform on neutral-atom systems. The release allows users to explore the assumptions behind resource estimates, test the tool against their own workloads, and contribute improvements that expand its usefulness over time. This open, collaborative approach is intended to accelerate application readiness, strengthen confidence in resource estimates, and help the ecosystem make more informed decisions as the industry advances toward fault-tolerant quantum computing. Development of resource-superstaq was performed in collaboration with the University of Chicago. Record Dual-Species Rb-Cs Gate Fidelity for In-Place Syndrome Measurement: Infleqtion researchers also demonstrated what the company believes is a world-record dual-species rubidium-cesium entangling gate fidelity in a neutral-atom quantum computing platform. The work, described in Qubit syndrome measurements with a high fidelity Rb-Cs Rydberg gate, reports an inter-species Rydberg gate between Rb and Cs atoms with world-record fidelity of 0.975 ± 0.002. The dual-species architecture is a key element of Infleqtion’s roadmap because it enables fast, in-place quantum non-demolition qubit measurements for quantum error correction. By using different atomic species for data and ancilla qubits, Infleqtion’s approach can perform measurement operations with reduced disturbance to nearby data qubits, helping avoid additional movement or shelving operations that can slow logical cycle rates and add error. The same work demonstrates multi-atom error syndrome measurements on two- and three-qubit plaquettes, core building blocks for surface-code quantum error correction. Infleqtion’s architecture combines fast in-place syndrome measurement enabled by the dual-species approach with in-place atom addressing and atom motion capabilities, creating a flexible platform for the physical operations required by fault-tolerant neutral-atom systems. New Theory Work Shows Path to >99.9% Neutral-Atom Entangling Gates: Complementing Infleqtion’s experimental dual-species gate result, a new theory preprint from the University of Wisconsin-Madison, co-authored by Professor Mark Saffman, Infleqtion’s Chief Scientist for Quantum Information, identifies a path to improving neutral-atom entangling gate fidelities beyond 99.9%. The result also highlights one of the key advantages of neutral-atom systems: the ability to combine high-fidelity operations, flexible connectivity and scalable architectures in a platform designed for quantum error correction. Together with Infleqtion’s dual-species gate demonstration, resource estimation tools and atom motion advances, the work strengthens the case for neutral atoms as a leading path toward utility-scale quantum computing. Infleqtion’s static-field approach enables sub-Doppler cooling and optical transport of cesium while keeping the magnetic-field gradient unchanged. In the reported demonstration, Infleqtion achieved 17 µK temperatures, direct loading into a shallow optical lattice, and optical transport over 17 cm within the same static-field environment. The work supports continuous-operation architectures by spatially separating atom preparation from regions requiring long coherence times and by delivering millions of atoms per second to a science cell.