Catalytic advantage in asymptotic entanglement manipulation

• URL: http://arxiv.org/abs/2605.04879v1
• Date: Wed, 06 May 2026 13:16:13 GMT
• Title: Catalytic advantage in asymptotic entanglement manipulation
• Abstract summary: Entanglement is a key quantum resource in various quantum protocols.<n>We show that an explicit catalytic protocol can significantly lower the exact entanglement cost.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Entanglement is a key quantum resource in various quantum protocols, with a rich set of laws governing its manipulation. In this context, catalysis refers to the possibility of an auxiliary state that enables a previously forbidden manipulation, while being completely returned at the end. While the catalytic setting has been thoroughly examined in the single-copy regime, much less is known in the asymptotically many copy regime. In this work, we focus on the entanglement cost of preparing asymptotically many copies of a given state exactly. We show that catalysis can significantly lower the exact entanglement cost by constructing an explicit catalytic protocol. Additionally, these findings generalize readily to other resource theories, showing a general catalytic advantage in the resource dilution task.

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