Quantum

Perfect and peak state transfer on IBM quantum hardware

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Based on a feed excerpt; full article content has not been acquired. Source evidence retrieved 16/10/2026, 04:13:25 UTC.

Briefings

Researchers successfully demonstrated perfect and peak state transfer on IBM's 156-qubit Heron processor without error correction. The study covers quantum walks on hypercubes (Q2, Q3) and Hamming-weighted paths (HPn) up to n=20, plus peak state transfer on Xn paths up to n=11. This represents a significant practical test of theoretical quantum walk results on real hardware.

Key points

• The study achieved perfect state transfer on IBM's Heron device using continuous-time quantum walks without any error correction or mitigation.
• Quantum walks were tested on hypercubes Q2 and Q3, as well as Hamming-weighted paths HPn for n up to 20.

Context

This research applies algebraic graph theory results to real quantum hardware, testing theoretical limits of state transfer on superconducting processors.

Limitations

The experiment used a 156-qubit device without error correction, limiting the scope to idealized conditions. Results are based on a single preprint snapshot from October 2026, with no follow-up data or validation.

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