Nonsequential positive-operator-valued measurements on entangled mixed states do not always violate a Bell inequality
Year: 2002
Type: article
Abstract: We present a local-hidden-variable model for positive-operator-valued measurements (an LHVPOV model) on a class of entangled generalized Werner states, thus demonstrating that such measurements do not always violate a Bell-type inequality. We also show that, in general, if the state ${\ensuremath{\rho}}^{\ensuremath{'}}$ can be obtained from $\ensuremath{\rho}$ with certainty by local quantum operations without classical communication, then an LHVPOV model for the state $\ensuremath{\rho}$ implies the existence of such a model for ${\ensuremath{\rho}}^{\ensuremath{'}}.$
Source: Physical Review A
Author: Jonathan Barrett
Institution: University of Cambridge
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W1976668624