Metrology in the Presence of Thermodynamically Consistent Measurements

Thermodynamically consistent measurements can either preserve statistics (unbiased) or preserve marginal states (non-invasive) but not both. Here we show the existence of metrological tasks which unequally favor each of the aforementioned measurement types. We consider two different metrology tasks,...

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Bibliographic Details
Main Authors Vetrivelan, Muthumanimaran, Panda, Abhisek, Vinjanampathy, Sai
Format Journal Article
LanguageEnglish
Published 27.04.2023
Subjects
Physics - Quantum Physics
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Summary:Thermodynamically consistent measurements can either preserve statistics (unbiased) or preserve marginal states (non-invasive) but not both. Here we show the existence of metrological tasks which unequally favor each of the aforementioned measurement types. We consider two different metrology tasks, namely weak value amplification technique and repeated metrology without resetting. We observe that unbiased measurement is better than non-invasive measurement for the former and the converse is true for the latter. We provide finite temperature simulations of transmon sensors which estimate how much cooling, a resource for realistic measurements, is required to perform these metrology tasks.
DOI:10.48550/arxiv.2304.14022