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Q-CTRL has demonstrated a significant breakthrough by executing the largest functional Quantum Fourier Transform on up to 100 qubits using a novel convolutional compilation strategy. This approach effectively eliminates routing overhead on linear nearest-neighbor topologies, achieving high process fidelity and resolving periodic signals across a massive Hilbert space without requiring all-to-all connectivity. The results validate that optimized software architectures can overcome hardware connectivity limitations, bringing practical quantum algorithms closer to scalability on current superconducting processors.

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Q-CTRL Executes 100-Qubit Quantum Fourier Transform Using Convolutional Compilation Strategy

Quantum Computing ReportSeptember 24, 20262 min read

Q-CTRL has successfully executed the Quantum Fourier Transform (QFT) on up to 100 qubits using a novel Convolutional Compilation Strategy, demonstrating the largest functional QFT on quantum hardware to date. This method eliminates routing overhead on linear nearest-neighbor topologies by leveraging identity cancellations and incorporating an ancilla qubit, resulting in a compact, translation-invariant kernel. The experimental execution on the IBM Heron R3 processor achieved significant process fidelity and consistent signal output, even at 100 qubits. The post Q-CTRL Executes 100-Qubit Quantum Fourier Transform Using Convolutional Compilation Strategy appeared first on Quantum Computing Report.

Quantum infrastructure software provider Q-CTRL has demonstrated an experimental execution of the Quantum Fourier Transform (QFT) subroutine on up to 100 physical qubits. Published on arXiv (arXiv:2608.05435), the research presents a constructive compilation architecture termed the Convolutional QFT.…

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