摘要
We propose a family of Hardy-type tests for an arbitrary n-partite system, which can detect different degrees of nonlocality ranging from standard to genuine multipartite non-locality. For any non-signaling m-local hidden variable model,the corresponding tests fail, whereas a pass of this type of test indicates that this state is m non-local. We show that any entangled generalized GHZ state exhibits Hardy’s non-locality for each rank of multipartite non-locality. Furthermore, for the detection of m non-localities, a family of Bell-type inequalities based on our test is constructed. Numerical results show that it is more efficient than the inequalities proposed in [Phys. Rev. A 94 022110(2016)].
We propose a family of Hardy-type tests for an arbitrary n-partite system, which can detect different degrees of nonlocality ranging from standard to genuine multipartite non-locality. For any non-signaling m-local hidden variable model,the corresponding tests fail, whereas a pass of this type of test indicates that this state is m non-local. We show that any entangled generalized GHZ state exhibits Hardy’s non-locality for each rank of multipartite non-locality. Furthermore, for the detection of m non-localities, a family of Bell-type inequalities based on our test is constructed. Numerical results show that it is more efficient than the inequalities proposed in [Phys. Rev. A 94 022110(2016)].
作者
杨飞
袁毓
林文璐
廖书傲
张成杰
陈清
Fei Yang;Yu Yuan;Wen-Lu Lin;Shu-Ao Liao;Cheng-Jie Zhang;Qing Chen(School of Physics and Astronomy,Yunnan University,Kunming 650500,China;Key Laboratory of Quantum Information of Yunnan Province,Kunming 650500,China;College of Physics,Optoelectronics and Energy,Soochow University,Suzhou 215006,China)
基金
Project supported by the National Natural Science Foundation of China(Grant Nos.11575155,11504253,and 11734015)
the Major Science and Technology Project of Yunnan Province,China(Grant No.2018ZI002)
