Quantum Art, a developer of full-stack fault-tolerant quantum computers based on trapped-ion qubits, announced research results verifying that its multi-qubit gate architecture advances scalable fault-tolerant quantum computing. The findings, detailed in a paper titled "Trapped-Ion Multi qubit Gates are Compatible with Scalable Quantum Error Correction," demonstrate that large-scale, multi-qubit gate operations are fully compatible with quantum error correction, addressing a key milestone toward large-scale quantum computers.
The company constructed a realistic noise model for multi-qubit gates and analyzed the performance of such models in scalable error correction codes. The results show a finite-threshold behavior at the 1% level using surface codes, suitable for scalable fault-tolerant quantum computing. Importantly, the simulation results showed that logical error correction continues to improve as the system scales, a key benchmark for evaluating whether a quantum architecture can ultimately support fault-tolerant operation.
"The most important result is that multi-qubit gates, favorable candidates for large scale quantum computation schemes, are also fully compatible and advantageous for fault tolerant codes," said Dr. Amit Ben-Kish, CTO and co-founder of Quantum Art. He noted that while the industry has focused on fault-tolerant systems built from one- and two-qubit operations, questions remained about whether large multi-qubit gates could support the same path. "Our analysis shows that the errors remain local and controlled, and that a practical threshold exists. That puts multi-qubit gates firmly in the fault-tolerant regime and provides a clear path for scaling such architectures."
Quantum Art's multi-qubit gate architecture offers significant advantages in computational efficiency, circuit compression, system scalability, and overall hardware footprint. The findings show that while all-to-all connected multi-qubit gates enable circuit depth compression and reduced computational overhead by orders of magnitude, error propagation remains small, controlled, and bound by the gate's connectivity mapping. This provides strong evidence that the architecture can scale while remaining compatible with fault-tolerant quantum computing requirements.
The milestone validates Quantum Art's roadmap toward large-scale fault-tolerant systems, including its planned Perspective platform, a 1,000-qubit multi-core quantum computer designed to support commercially relevant applications with tens to hundreds of logical qubits, as well as next-generation Landscape series supporting thousands of logical qubits. The research was conducted by O. Grossman, Y. Kadish, S. Gazit, A. Ben-Kish, R. Ozeri, and Y. Shapira, and the paper is available here.
