{"title":"Performance advantage of protective quantum measurements","authors":"Maximilian Schlosshauer","doi":"arxiv-2409.12174","DOIUrl":null,"url":null,"abstract":"We compare the performance of protective quantum measurements to that of\nstandard projective measurements. Performance is quantified in terms of the\nuncertainty in the measured expectation value. We derive an expression for the\nrelative performance of these two types of quantum measurements and show\nexplicitly that protective measurements can provide a significant performance\nadvantage over standard projective measurements.","PeriodicalId":501226,"journal":{"name":"arXiv - PHYS - Quantum Physics","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"arXiv - PHYS - Quantum Physics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/arxiv-2409.12174","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
We compare the performance of protective quantum measurements to that of
standard projective measurements. Performance is quantified in terms of the
uncertainty in the measured expectation value. We derive an expression for the
relative performance of these two types of quantum measurements and show
explicitly that protective measurements can provide a significant performance
advantage over standard projective measurements.
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