QuEra Computing and Los Alamos National Laboratory Publish New Quantum Architecture That Cuts Resource Requirements for Early Fault-Tolerant Quantum Simulation by Orders of Magnitude

QuEra Computing announced the publication in PRX Quantum of a new co-designed quantum computing architecture developed in collaboration with Los Alamos National Laboratory. The architecture is called transversal STAR. It is targeted at structured quantum simulation problems in materials science, condensed matter and non-equilibrium dynamics. The work addresses the megaquop regime, in which an error-corrected quantum computer carries out approximately one million reliable logical operations. Transversal STAR prepares small-angle magic states directly via post-selection-based transversal injection. It performs Clifford operations transversally, taking advantage of the reconfigurable connectivity and large-scale parallelism of neutral-atom hardware. Circuit-level simulations show that the surface-code-based version can simulate local Hamiltonians with a total simulation volume exceeding 600 using approximately 10,000 physical qubits at a physical two-qubit gate error rate of 10 to the minus 3. This represents a 20 to 40 times reduction in overall space-time cost relative to the previous best-in-class STAR architecture, which required approximately 20,000 physical qubits. The paper extends the approach to high-rate quantum low-density parity-check codes, reducing the physical qubit count Sheng-Tao Wang, vice president of algorithms and applications at QuEra Computing, said megaquop-scale quantum simulation is a critical intermediate step toward realizing the full potential of fault-tolerant quantum computation. Andrew Sornborger of the Computer and Computational Sciences Division at Los Alamos National Laboratory said the work shows the value of pairing computational science expertise with quantum hardware capabilities. The architecture is partially fault-tolerant