Increasing identical particle entanglement by fuzzy measurements

Phys. Rev. A 72, 062307 (2005) We investigate the effects of fuzzy measurements on spin entanglement for identical particles, both fermions and bosons. We first consider an ideal measurement apparatus and define operators that detect the symmetry of the spatial and spin part of the density matrix as...

Full description

Saved in:
Bibliographic Details
Main Authors Cavalcanti, D, Santos, M. F, Cunha, M. O. Terra, Lunkes, C, Vedral, V
Format Journal Article
LanguageEnglish
Published 05.05.2005
Subjects
Physics - Quantum Physics
Online AccessGet full text

Cover

More Information
Summary:Phys. Rev. A 72, 062307 (2005) We investigate the effects of fuzzy measurements on spin entanglement for identical particles, both fermions and bosons. We first consider an ideal measurement apparatus and define operators that detect the symmetry of the spatial and spin part of the density matrix as a function of particle distance. Then, moving on to realistic devices that can only detect the position of the particle to within a certain spread, it was surprisingly found that the entanglement between particles increases with the broadening of detection.
DOI:10.48550/arxiv.quant-ph/0505029