Journal
PHYSICAL REVIEW LETTERS
Volume 125, Issue 15, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.125.150402
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Funding
- Japan Society for the Promotion of Science (JSPS) [19J20161]
- Guangdong Provincial Key Laboratory [2019B121203002]
- JSPS [17H01280, 16KT0017]
- Kayamori Foundation of Information Science Advancement
- Grants-in-Aid for Scientific Research [19J20161] Funding Source: KAKEN
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As a modern approach for the foundation of quantum theory, existing studies of general probabilistic theories gave various models of states and measurements that are quite different from quantum theory. In this Letter, to seek a more realistic situation, we investigate models approximately close to quantum theory. We define larger measurement classes that are smoothly connected with the class of POVMs via a parameter, and investigate the performance of perfect discrimination. As a result, we give a sufficient condition of perfect discrimination, which shows a significant improvement beyond the class of POVMs.
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