par Massar, Serge 
;Pironio, Stefano ;Roland, Jérémie ;Gisin, Bernard
Référence Physical review. A, Atomic, Molecular, and Optical Physics, 66, 5, 052112
Publication Publié, 2002
;Pironio, Stefano ;Roland, Jérémie ;Gisin, BernardRéférence Physical review. A, Atomic, Molecular, and Optical Physics, 66, 5, 052112
Publication Publié, 2002
Article révisé par les pairs
| Résumé : | We derive both numerically and analytically Bell inequalities and quantum measurements that present enhanced resistance to detector inefficiency. In particular, we describe several Bell inequalities which appear to be optimal with respect to inefficient detectors for small dimensionality [Formula Presented] and two or more measurement settings at each side. We also generalize the family of Bell inequalities described by Collins et al. [Phys. Rev. Lett. 88, 040404 (2002)] to take into account the inefficiency of detectors. In addition, we consider the possibility for pairs of entangled particles to be produced with probability less than 1. We show that when the pair production probability is small, one should in general use different Bell inequalities than when the pair production probability is high. © 2002 The American Physical Society. |
