A Profunctorial Semantics for Quantum Supermaps - Ecole Normale Supérieure paris-Saclay
Communication Dans Un Congrès Année : 2024

A Profunctorial Semantics for Quantum Supermaps

Matt Wilson
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Résumé

We identify morphisms of strong profunctors as a categorification of quantum supermaps. These black-box generalisations of diagrams-with-holes are hence placed within the broader field of profunctor optics, as morphisms in the category of copresheaves on concrete networks. This enables the first construction of abstract logical connectives such as tensor products and negations for supermaps in a totally theory-independent setting. These logical connectives are found to be all that is needed to abstractly model the key structural features of the quantum theory of supermaps: black-box indefinite causal order, black-box definite causal order, and the factorisation of definitely causally ordered supermaps into concrete circuit diagrams. We demonstrate that at the heart of these factorisation theorems lies the Yoneda lemma and the notion of representability.
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Dates et versions

hal-04720947 , version 1 (04-10-2024)

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Citer

James Hefford, Matt Wilson. A Profunctorial Semantics for Quantum Supermaps. 39th Annual ACM/IEEE Symposium on Logic in Computer Science (LICS '24), Jul 2024, Tallinn, Estonia. pp.43, ⟨10.1145/3661814.3662123⟩. ⟨hal-04720947⟩
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