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Quantum Programs Get a Noninterference Proof

Self-conjugation replaces classical self-composition when no-cloning blocks the usual information-flow argument.

Published Updated Story ID: mp-2026-11-11-016
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Summary

Self-conjugation replaces classical self-composition when no-cloning blocks the usual information-flow argument.

The paper defines noninterference- and simulation-based security for quantum programs and proves the two notions equivalent. It introduces self-conjugation to express information-flow properties in quantum Hoare logic where copying a program state would fail. Examples cover the quantum one-time pad, error correction and anonymous entanglement.

Why it matters

Self-conjugation replaces classical self-composition when no-cloning blocks the usual information-flow argument.

Limits and context

No additional limitation was separately recorded.

Key claims

  1. Self-conjugation replaces classical self-composition when no-cloning blocks the usual information-flow argument.

    Evidence: source-2026-11-11-018

Sources

  1. arXiv:2611.14147v1arXiv / Cornell University · primary research

Corrections

No corrections have been recorded for this story.