Incompatibility breaking quantum channels

Autor:	Heinosaari, Teiko, Kiukas, Jukka, Reitzner, Daniel, Schultz, Jussi
Rok vydání:	2015
Předmět:	Quantum Physics
Zdroj:	J. Phys. A: Math. Theor. 48 (2015) 435301
Druh dokumentu:	Working Paper
DOI:	10.1088/1751-8113/48/43/435301
Popis:	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. Comment: new references added in v2
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1504.05768 Zobrazit plný text záznamu View this record from Arxiv