Exclusive Control of Quantum Memory Erasure

• URL: http://arxiv.org/abs/2512.05761v1
• Date: Fri, 05 Dec 2025 14:48:39 GMT
• Title: Exclusive Control of Quantum Memory Erasure
• Abstract summary: We analyze assisted quantum erasure, where correlations with a remote system reduce the energetic cost of resetting a memory.<n>We identify exclusive control of erasure as the central operational requirement.<n>Results elevate quantum erasure from a thermodynamic constraint to an operational primitive.
• Score: 0.6524460254566904
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Erasing memory is a fundamental operational task in quantum information processing, governed by Landauer's principle, which links information loss to thermodynamic work. We introduce and analyze assisted quantum erasure, where correlations with a remote system reduce the energetic cost of resetting a memory. We identify exclusive control of erasure as the central operational requirement: only a designated party should be able to achieve the minimal cost, while any adversary necessarily fails. In the device-dependent regime, we show that entanglement of formation exactly characterizes exclusivity, establishing entanglement as the decisive thermodynamic resource. Moving to a one-sided device-independent scenario, in which only the memory holder's device is trusted, we develop an operational erasure protocol based on random dephasing and conditional operations. These results elevate quantum erasure from a thermodynamic constraint to an operational primitive: the erasure work cost quantifies secure, exclusive control over quantum memory, guaranteeing that an unauthorized agent cannot fully erase information under bounded work.

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