H2-1 (quantum computer)

2024: Product Announcement

On June 5, 2024, Quantum introduced the 56-quant H2-1 computer, which is said to combine industry-leading precision and performance with error correction capabilities. According to Cantinuum, the new system is bringing the era of universal fault-tolerant quantum computing closer.

The Quantum complex H2-1 built on ion traps. The developer says the system is capable of challenging the world's most powerful supercomputers. To demonstrate the capabilities of the quantum platform, the company used the RCS (Random Circuit Sampling) algorithm and a set of tests, including XEB (Linear Cross Entropy Benchmark). The work was attended by specialists from JPMorgan Chase & Co., as well as researchers from the California Institute of Technology and the Argonne National Laboratory.

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Quantinuum

In the case of XEB, a score is given on a scale of 0 (all results are erroneous) to 1 (completely error-free results). In 2019, Google based on the 53-qubit Sycamore quantum computer showed an XEB result of 0.002. In the case of the Quantum H2-1 machine, this figure reaches 0.35. That is, more than 100-fold improvement is provided over Sycamore. A quantum computer H2-1 produces results without a single error, in about 35% of cases.

However, in the case of RCS, Quantum estimates the amount of energy that needs to be spent to complete the task on H2-1 machine and on classic computing equipment. In this case, the quantum computer is said to be 30,000 times more efficient than traditional supercomputers. It is also said that the Cantinuum architecture provides the ability to scale to a large number of qubits.^[1]

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