Quantinuum has unveiled yet another significant breakthrough in pursuing fault-tolerant quantum computing by releasing another version of their H-Series System Models, H2. This quantum computer is presently the most advanced and high-performing system available, allowing for the realization of this milestone accomplishment. Together with Harvard University and Caltech, they have successfully experimented on the H2 quantum processor that demonstrated a new state of matter: a non-Abelian topologically ordered state.
The official launch of Quantinuum’s H2 quantum processor, which Honeywell powers, was preceded by extensive preparatory efforts involving various global partners. These endeavours were crucial in enabling the controlled creation and manipulation of non-Abelian anyons, which are pivotal for using topological qubits to achieve fault tolerance in quantum computing.
Having complete control of non-Abelian anyons represents a noteworthy accomplishment in the field as it paves the way for achieving quantum computing fault tolerance.
Thanks to the advanced capabilities and precise control of the H2 processor, the topological state, which is essentially a qubit with limited gate capacity, was created to enable its properties to be precisely manipulated in real-time.
This achievement was demonstrated by creating, braiding, and annihilating (measuring) non-Abelian anyons. The exceptional differentiation and precision of the H2 processor have enabled Quantinuum to make significant progress in quantum computing.
H2 Quantum Processor: An Innovative ‘Racetrack’ Design
The H2 quantum processor features 32 high-fidelity, fully-connected qubits and an innovative “racetrack” design that advances the linear structure of the H1. At the forefront of quantum computing, Quantinuum showcased H2’s capabilities by demonstrating the largest GHZ state on record, where all 32 qubits were globally entangled in a non-classical form.
The unique architecture of the H2 enables all-to-all connectivity between qubits, significantly reducing algorithm errors and creating new opportunities for more efficient error-correcting codes. Additionally, this design is a significant step toward demonstrating the scaling potential of ion-trap devices. The H2 quantum processor is designed to accommodate future upgrades, meaning that both qubit number and quality will continue to improve over its product lifecycle.
Furthermore, the H2 quantum processor includes several hallmark features, such as qubit reuse, mid-circuit measurement with conditional logic, and long coherence times, setting it apart from other quantum computers. The System Model H1’s impressive performance gains are expected to continue with H2, which launches with a Quantum Volume of 65,536, surpassing the previous record set using H1-1 earlier this year.
Demonstrating controlled non-Abelian anyons, the H2 quantum processor has achieved an essential step in topological quantum information storage and processing. The exceptional differentiation and precision of the H2 processor have enabled Quantinuum to make significant progress in quantum computing. The all-new architecture is expected to pave the way for future advancements and scaling in subsequent generations.
Quantinuum’s H2 quantum processor is now available for cloud-based access through Quantinuum, expanding to Microsoft Azure Quantum in June. Moreover, an emulator of the H2, informed by noise, is available through NVIDIA’s cuQuantum SDK, which contains optimized libraries and tools that enhance quantum computing simulation workflows.