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Quantum Errors Determine the Late-Time Mixed Ensemble

For several random and dual-unitary dynamics, the limiting projected ensemble is fixed by the error channel’s normalized Choi state.

Published Updated Story ID: mp-2026-10-24-019
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Summary

For several random and dual-unitary dynamics, the limiting projected ensemble is fixed by the error channel’s normalized Choi state.

The analysis extends deep thermalization from pure projected states to noisy mixed states and finds universality independent of microscopic unitary details in the studied regimes. Numerical checks include qubit circuits and kicked Ising dynamics. It is a theoretical and simulation result, not a hardware demonstration.

Why it matters

For several random and dual-unitary dynamics, the limiting projected ensemble is fixed by the error channel’s normalized Choi state.

Limits and context

  • It is a theoretical and simulation result, not a hardware demonstration.

Key claims

  1. For several random and dual-unitary dynamics, the limiting projected ensemble is fixed by the error channel’s normalized Choi state.

    Qualification: It is a theoretical and simulation result, not a hardware demonstration.

    Evidence: source-2026-10-24-021

Sources

  1. arXiv preprint 2610.31580, original v1arXiv · primary research

Corrections

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