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This research reveals that standard error correction in surface-code quantum memories does not guarantee execution-transcript privacy, as vulnerabilities are simply relocated to the logical state itself. The study demonstrates that a specific memory configuration leaks input data with over 92% accuracy under randomized acquisition, challenging previous assumptions about fault tolerance. Consequently, designers must prioritize 'Z-distance' metrics and develop new protocols to prevent sensitive information from being exposed through encoded qubits.

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Quantum Memory Leaks Input Data with over 92% Accuracy under Damping

Quantum Zeitgeist10 septembrie 20264 min de cititArticolul și perspectiva sunt în engleză.

Execution-transcript privacy for fault-tolerant surface-code memories A memory capable of correcting errors still reveals its input with over ninety percent certainty under randomised acquisition; specifically, a code boasting minimal quantum distance (dZ=1) leaks information via its record. This demonstrates that error correction doesn’t eliminate data vulnerability but shifts it into the encoded qubit itself. Understanding this relocation is vital for designing genuinely secure quantum computation.

A total variation of greater than or equal to 0.927 defines how easily a record identifies its input in a Z-distance one memory, measured using randomised acquisition. Previously, fault tolerance was thought to shift potential information leakage onto the logical state itself instead of guaranteeing privacy for quantum computer transcripts. Correcting errors within quantum computers does not inherently secure data; rather, potential vulnerabilities are transferred to the encoded information itself. The finding demonstrates that standard…

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