Post-quantum steering is a stronger-than-quantum resource for information processing

Autor:	Cavalcanti, Paulo J., Selby, John H., Sikora, Jamie, Galley, Thomas D., Sainz, Ana Belén
Rok vydání:	2021
Předmět:	Quantum Physics
Zdroj:	npj Quantum Inf 8, 76 (2022)
Druh dokumentu:	Working Paper
DOI:	10.1038/s41534-022-00574-8
Popis:	We present the first instance where post-quantum steering is a stronger-than-quantum resource for information processing -- remote state preparation. In addition, we show that the phenomenon of post-quantum steering is not just a mere mathematical curiosity allowed by the no-signalling principle, but it may arise within compositional theories beyond quantum theory, hence making its study fundamentally relevant. We show these results by formulating a new compositional general probabilistic theory -- which we call Witworld -- with strong post-quantum features, which proves to be a intuitive and useful tool for exploring steering and its applications beyond the quantum realm. Comment: 9 pages, loads of diagrams. Comments welcome. Latest version: published version
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2102.06581 Zobrazit plný text záznamu View this record from Arxiv