Refereed review article in scientific journal (A2)
Colloquium: Incompatible measurements in quantum information science
List of Authors: Gühne Otfried, Haapasalo Erkka, Kraft Tristan, Pellonpää Juha-Pekka, Uola Roope
Publisher: AMER PHYSICAL SOC
Publication year: 2023
Journal: Reviews of Modern Physics
Journal name in source: REVIEWS OF MODERN PHYSICS
Journal acronym: REV MOD PHYS
Volume number: 95
Issue number: 1
Number of pages: 25
ISSN: 0034-6861
eISSN: 1539-0756
DOI: http://dx.doi.org/10.1103/RevModPhys.95.011003
URL: http://dx.doi.org/10.1103%2FRevModPhys.95.011003
Self-archived copy’s web address: https://research.utu.fi/converis/portal/detail/Publication/178956501
Some measurements in quantum mechanics disturb each other. This has puzzled physicists since the formulation of the theory, but only in recent decades has the incompatibility of measurements been analyzed in depth and detail, using the notion of joint measurability of generalized measurements. In this Colloquium joint measurability and incompatibility are reviewed from the perspective of quantum information science. The Colloquium starts by discussing the basic definitions and concepts. An overview on applications of incompatibility, such as in measurement uncertainty relations, the characterization of quantum correlations, or information processing tasks like quantum state discrimination, is then presented. Finally, emerging directions of research, such as a resource theory of incompatibility as well as other concepts to grasp the nature of measurements in quantum mechanics, are discussed.
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