Measurement incompatibility and steering are necessary and sufficient for operational contextuality

Abstract

Two fundamental features of quantum theory are that measurements cannot be performed jointly and that entangled states can be steered through action-at-a-distance. Here it is shown that both these phenomena are in one-to-one correspondence with the failure of noncontextual models to explain the predictions of quantum theory.

Locations

• Physical Review Research - View - PDF
• arXiv (Cornell University) - View - PDF
• DataCite API - View