A1 Refereed original research article in a scientific journal

Incompatibility breaking quantum channels




AuthorsTeiko Heinosaari, Jukka Kiukas, Daniel Reitzner, Jussi Schultz

PublisherIOP PUBLISHING LTD

Publication year2015

JournalJournal of Physics A: Mathematical and Theoretical

Journal name in sourceJOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL

Journal acronymJ PHYS A-MATH THEOR

Article number435301

Volume48

Issue43

Number of pages23

ISSN1751-8113

DOIhttps://doi.org/10.1088/1751-8113/48/43/435301


Abstract

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.




Last updated on 2024-26-11 at 10:59