Quantum Steering Inequality with Tolerance for Measurement-Setting Errors: Experimentally Feasible Signature of Unbounded Violation

Adam Rutkowski; Adam Buraczewski; Paweł Horodecki; Magdalena Stobińska

doi:10.1103/physrevlett.118.020402

Quantum Steering Inequality with Tolerance for Measurement-Setting Errors: Experimentally Feasible Signature of Unbounded Violation

Abstract

uantum steering is a relatively simple test for proving that the values of quantum-mechanical measurement outcomes come into being only in the act of measurement. By exploiting quantum correlations, Alice can influence — steer — Bob ’ s physical system in a way that is impossible in classical mechanics, as shown by the violation of steering inequalities. Demonstrating this and similar quantum effects for systems of increasing size, approaching even the classical limit, is a long-standing challenging problem. Here, we prove an experimentally feasible unbounded violation of a steering inequality. We derive its universal form where tolerance for measurement-setting errors is explicitly built in by means of the Deutsch – Maassen – Uffink entropic uncertainty relation. Then, generalizing the mutual unbiasedness, we apply the inequality to the multisinglet and multiparticle bipartite Bell state. However, the method is general and opens the possibility of employing multiparticle bipartite steering for randomness certification and development of quantum technologies, e.g., random access codes.

Citations

2 7

CrossRef
0

Web of Science
2 7

Scopus

Authors (4)

Cite as

Full text

full text is not available in portal

full content of the article see on external site open in new tab

Keywords

Details

Category:: Articles
Type:: artykuł w czasopiśmie wyróżnionym w JCR
Published in:: PHYSICAL REVIEW LETTERS no. 118, edition 2, pages 1 - 6,
ISSN: 0031-9007
Language:: English
Publication year:: 2017
Bibliographic description:: Rutkowski A., Buraczewski A., Horodecki P., Stobińska M.: Quantum Steering Inequality with Tolerance for Measurement-Setting Errors: Experimentally Feasible Signature of Unbounded Violation// PHYSICAL REVIEW LETTERS. -Vol. 118, iss. 2 (2017), s.1-6
DOI:: Digital Object Identifier (open in new tab) 10.1103/physrevlett.118.020402
Verified by:: Gdańsk University of Technology