Quantum volume is a metric that measures the capabilities and error rates of a quantum computer. It expresses the maximum size of square quantum circuits that can be implemented successfully by the computer. The form of the circuits is independent from the quantum computer architecture, but compiler can transform and optimize it to take advantage of the computer's features. Thus, quantum volumes for different architectures can be compared.
The current world record for highest quantum volume as of April 2024[update] is 220, accomplished by Quantinuum's H1-1 20-qubit ion trap quantum computer.[1]
^"Quantinuum extends its significant lead in quantum computing, achieving historic milestones for hardware fidelity and Quantum Volume". www.quantinuum.com. Retrieved 2024-04-17.
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