標題: Experimental violation of Bell inequalities for multi-dimensional systems
作者: Lo, Hsin-Pin
Li, Che-Ming
Yabushita, Atsushi
Chen, Yueh-Nan
Luo, Chih-Wei
Kobayashi, Takayoshi
電子物理學系
Department of Electrophysics
公開日期: 26-Feb-2016
摘要: Quantum correlations between spatially separated parts of a d-dimensional bipartite system (d >= 2) have no classical analog. Such correlations, also called entanglements, are not only conceptually important, but also have a profound impact on information science. In theory the violation of Bell inequalities based on local realistic theories for d-dimensional systems provides evidence of quantum nonlocality. Experimental verification is required to confirm whether a quantum system of extremely large dimension can possess this feature, however it has never been performed for large dimension. Here, we report that Bell inequalities are experimentally violated for bipartite quantum systems of dimensionality d=16 with the usual ensembles of polarization-entangled photon pairs. We also estimate that our entanglement source violates Bell inequalities for extremely high dimensionality of d>4000. The designed scenario offers a possible new method to investigate the entanglement of multipartite systems of large dimensionality and their application in quantum information processing.
URI: http://dx.doi.org/10.1038/srep22088
http://hdl.handle.net/11536/132575
ISSN: 2045-2322
DOI: 10.1038/srep22088
期刊: SCIENTIFIC REPORTS
Volume: 6
起始頁: 0
結束頁: 0
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