Observation of quantum nonlocality in Greenberger-Horne-Zeilinger entanglement on a silicon

被引:0
|
作者
Chen, Leizhen [1 ]
Wu, Bochi [1 ]
Lu, Liangliang [2 ]
Wang, Kai [1 ]
Lu, Yanqing [1 ]
Zhu, Shining [1 ]
Ma, Xiao-Song [1 ,3 ,4 ]
机构
[1] Nanjing Univ, Coll Engn & Appl Sci, Collaborat Innovat Ctr Adv Microstruct, Sch Phys,Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China
[2] Nanjing Normal Univ, Sch Phys Sci & Technol, Key Lab Optoelect Technol Jiangsu Prov, Nanjing 210023, Peoples R China
[3] Univ Sci & Technol China, Synerget Innovat Ctr Quantum Informat & Quantum Ph, Hefei 230026, Anhui, Peoples R China
[4] Hefei Natl Lab, Hefei 230088, Peoples R China
来源
OPTICS EXPRESS | 2024年 / 32卷 / 09期
关键词
BELL INEQUALITIES; VIOLATION; PHOTONS;
D O I
10.1364/OE.515070
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Nonlocality is the defining feature of quantum entanglement. Entangled states with multiple particles are of crucial importance in fundamental tests of quantum physics as well as in many quantum information tasks. One of the archetypal multipartite quantum states, Greenberger-Horne-Zeilinger (GHZ) state, allows one to observe the striking conflict of quantum physics to local realism in the so-called all -versus -nothing way. This is profoundly different from Bell's theorem for two particles, which relies on statistical predictions. Here, we demonstrate an integrated photonic chip capable of generating and manipulating the four -photon GHZ state. We perform a complete characterization of the four -photon GHZ state using quantum state tomography and obtain a state fidelity of 0.729 +/- 0.006. We further use the all -versus -nothing test and the Mermin inequalities to witness the quantum nonlocality of GHZ entanglement. Our work paves the way to perform fundamental tests of quantum physics with complex integrated quantum devices.
引用
收藏
页码:14904 / 14913
页数:10
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