Horizon Quantum Holdings Ltd. (NASDAQ: HQ) announced it will purchase one of IonQ's (NYSE: IONQ) first sixth-generation, chip-based 256-qubit trapped-ion systems, according to a company statement.

The system features microwave gate operations and 99.99% gate fidelity, with all qubits designed to work together through what the companies describe as "all-to-all connectivity" and parallel operations. IonQ achieved the 99.99% two-qubit gate fidelity milestone in 2025.

Horizon Quantum plans to use the system to expand its quantum hardware testbed beyond its initial superconducting system, adding a second hardware modality. The company intends to integrate the trapped-ion system with its Triple Alpha software platform, which it describes as a hardware-agnostic quantum development environment.

"I could not be more delighted to be working with IonQ to bring trapped ion and world-leading gate fidelities to our testbed," said Horizon Quantum Founder and CEO Dr. Joe Fitzsimons. "Bringing a state-of-the-art system with the capabilities of hundreds of qubits will provide an important and cutting-edge resource to bear in our quest to unlock broad quantum advantage for developers."

The agreement aims to enhance Horizon Quantum's execution infrastructure with real-time runtime capabilities, including general control flow, dynamic memory allocation, and concurrent classical/quantum function evaluation.

Founded in 2018, Horizon Quantum develops software infrastructure for quantum computing applications. IonQ, headquartered in College Park, Maryland, operates quantum computing services available through major cloud providers and works with customers including Amazon Web Services, AstraZeneca, and NVIDIA.