Open AccessExperimental investigation of different Bell-type inequality in three-qubit Greenberger-Horne-Zeilinger states
Author(s) -
Jianhua Zhao,
Cao Lian-Zhen,
Xiaoqin Wang,
HongYan Lu
Publication year - 2012
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.61.170301
Subject(s) - quantum nonlocality , greenberger–horne–zeilinger state , bell test experiments , chsh inequality , physics , quantum entanglement , density matrix , local hidden variable theory , fidelity , quantum mechanics , qubit , statistical physics , construct (python library) , quantum cryptography , quantum , theoretical physics , quantum channel , computer science , quantum information , telecommunications , programming language
We investigate experimentally the violation of the Bell, Mermin and Svetlichny inequalities to local realism prediction. Using the maximum-likelihood technique to construct the density matrix and calculate the fidelity of the Greenberger-Horne-Zeilinger (GHZ) state. The values of the three inequalities are measured. The experimental resuls show that the three inequalities have different violation degrees to local realism prediction. So we can choose a suitable method of nonlocality to estimate the security of quantum channel.