Quantinuum has upgraded its H2-1 quantum computer from 32 to 56 trapped-ion qubits, marking a significant advancement in the quantum computing field. This system has achieved a new world record in the cross entropy benchmark, with a joint team from Quantinuum and JPMorgan Chase demonstrating a 100x improvement over previous industry results. The H2-1’s capabilities make it impossible for classical supercomputers to simulate.
The H2-1 also boasts a 30,000x reduction in power consumption for Random Circuit Sampling (RCS) compared to classical supercomputers. The H2-1 also has an advantage in that it achieves an all-to-all connectivity for its 56 qubits and demonstrates a high 99.843% two-qubit gate fidelity. The all-to-all connectivity can be particularly helpful for quantum programmers because it allows them to create more efficient circuits with fewer gates and levels. It also opens the door for more efficient error correction codes such as Q-LDPC (Quantum Low Density Parity Check) that take advantage of the better connectivity.
This launch follows several key achievements for Quantinuum in 2024, such as solving the “wiring problem” and achieving 99.9% two-qubit gate fidelity. Rajeeb Hazra, CEO of Quantinuum, highlighted the importance of qubit quality over quantity in advancing towards fault-tolerant quantum computing. This focus is expected to accelerate research and commercialization across various industries, including finance, logistics, transportation, and chemistry.
Additional information about this upgrade to the Quantinuum’s H2 processor is available in a press release here, a blog article here, and a technical paper posted on arXiv here.
June 5, 2024