RapunSL: Untangling Quantum Computing with Separation, Linear Combination and Mixing

Fuente: arXiv
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Autori principali: Matsushita, Yusuke, Hirata, Kengo, Wakizaka, Ryo, D'Osualdo, Emanuele
Natura: Preprint
Pubblicazione: 2025
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author Matsushita, Yusuke
Hirata, Kengo
Wakizaka, Ryo
D'Osualdo, Emanuele
author_facet Matsushita, Yusuke
Hirata, Kengo
Wakizaka, Ryo
D'Osualdo, Emanuele
contents Quantum Separation Logic (QSL) has been proposed as an effective tool to improve the scalability of deductive reasoning for quantum programs. In QSL, separation is interpreted as disentanglement, and the frame rule brings a notion of entanglement-local specification (one that only talks about the qubits entangled with those acted upon by the program). In this paper, we identify two notions of locality unique to the quantum domain, and we construct a novel quantum separation logic, RapunSL, which is able to soundly reduce reasoning about superposition states to reasoning about pure states (basis-locality), and reasoning about mixed states arising from measurement to reasoning about pure states (outcome-locality). To do so, we introduce two connectives, linear combination and mixing, which together with separation provide a dramatic improvement in the scalability of reasoning, as we demonstrate on a series of challenging case studies.
format Preprint
id arxiv_https___arxiv_org_abs_2511_23472
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle RapunSL: Untangling Quantum Computing with Separation, Linear Combination and Mixing
Matsushita, Yusuke
Hirata, Kengo
Wakizaka, Ryo
D'Osualdo, Emanuele
Programming Languages
Logic in Computer Science
Quantum Physics
Quantum Separation Logic (QSL) has been proposed as an effective tool to improve the scalability of deductive reasoning for quantum programs. In QSL, separation is interpreted as disentanglement, and the frame rule brings a notion of entanglement-local specification (one that only talks about the qubits entangled with those acted upon by the program). In this paper, we identify two notions of locality unique to the quantum domain, and we construct a novel quantum separation logic, RapunSL, which is able to soundly reduce reasoning about superposition states to reasoning about pure states (basis-locality), and reasoning about mixed states arising from measurement to reasoning about pure states (outcome-locality). To do so, we introduce two connectives, linear combination and mixing, which together with separation provide a dramatic improvement in the scalability of reasoning, as we demonstrate on a series of challenging case studies.
title RapunSL: Untangling Quantum Computing with Separation, Linear Combination and Mixing
topic Programming Languages
Logic in Computer Science
Quantum Physics
url https://arxiv.org/abs/2511.23472