Author

Jia-Chen Shen

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Preprint Sep 2026

Execution-transcript privacy for fault-tolerant surface-code memories

A fault-tolerant quantum computer runs behind a telemetry stream logging syndromes, decoder actions, resets and timing separately from the answer. Can it reveal the logical input? For a distance-$d$ rotated surface-code memory on a fixed schedule of $T=\Theta(d)$ rounds, under three stated hypotheses (sector-scalar hon...

Jia-Chen Shen, Hui Zhong · 0 citations

Preprint Sep 2026

Capability-Gated Conformance Testing of Quantum Error-Correction Decoder Libraries

A quantum error correction decoder is a library other people's results depend on, judged in one dominant way. Sample errors, decode, and count wrong logical observables. We ask what else can be checked there. Our conformance contract needs no oracle. One check asks that a returned correction explain the syndrome in the...

Jia-Chen Shen, Hui Zhong · 0 citations