A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
Incompatibility breaking quantum channels
Tekijät: Teiko Heinosaari, Jukka Kiukas, Daniel Reitzner, Jussi Schultz
Kustantaja: IOP PUBLISHING LTD
Julkaisuvuosi: 2015
Journal: Journal of Physics A: Mathematical and Theoretical
Tietokannassa oleva lehden nimi: JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL
Lehden akronyymi: J PHYS A-MATH THEOR
Artikkelin numero: 435301
Vuosikerta: 48
Numero: 43
Sivujen määrä: 23
ISSN: 1751-8113
DOI: https://doi.org/10.1088/1751-8113/48/43/435301
A typical bipartite quantum protocol, such as EPR-steering, relies on two quantum features, entanglement of states and incompatibility of measurements. Noise can delete both of these quantum features. In this work we study the behavior of incompatibility under noisy quantum channels. The starting point for our investigation is the observation that compatible measurements cannot become incompatible by the action of any channel. We focus our attention to channels which completely destroy the incompatibility of various relevant sets of measurements. We call such channels incompatibility breaking, in analogy to the concept of entanglement breaking channels. This notion is relevant especially for the understanding of noise-robustness of the local measurement resources for steering.