Guff T, McMahon N, Sanders YR, Gilchrist A (2021)
Publication Type: Journal article
Publication year: 2021
Book Volume: 54
Article Number: abed67
Journal Issue: 22
Resource theories are broad frameworks that capture how useful objects are in performing specific tasks. In this paperwe devise a formal resource theory quantum measurements, focusing on the ability of a measurement to acquire information. The objects of the theory are equivalence classes of positive operatorvalued measures, and the free transformations are changes to a measurement device that can only deteriorate its ability to report information about a physical system. We show that catalysis and purification, protocols that are possible in other resource theories, are impossible in our resource theory for quantum measurements. Standard measures of information gain are shown to be resource monotones, and the resource theory is applied to the task of quantum state discrimination.
APA:
Guff, T., McMahon, N., Sanders, Y.R., & Gilchrist, A. (2021). A resource theory of quantum measurements. Journal of Physics A: Mathematical and Theoretical, 54(22). https://doi.org/10.1088/1751-8121/abed67
MLA:
Guff, Thomas, et al. "A resource theory of quantum measurements." Journal of Physics A: Mathematical and Theoretical 54.22 (2021).
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