Multiphoton nonclassical correlations in entangled squeezed vacuum states

被引：7
|
作者：
Kanseri, Bhaskar [1 ]
Iskhakov, Timur [1 ]
Rytikov, Georgy [2 ]
Chekhova, Maria [1 ,3 ,4 ]
Leuchs, Gerd [1 ,4 ]
机构：
[1] Max Planck Inst Sci Light, D-91058 Erlangen, Germany
[2] Ivan Fedorov State Univ Printing Arts, Moscow, Russia
[3] Moscow MV Lomonosov State Univ, Moscow 119992, Russia
[4] Univ Erlangen Nurnberg, D-91058 Erlangen, Germany
来源：
PHYSICAL REVIEW A | 2013年 / 87卷 / 03期
基金：
俄罗斯基础研究基金会;
关键词：
POLARIZATION; LIGHT;
D O I：
10.1103/PhysRevA.87.032110
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Photon-number correlation measurements are performed on bright squeezed vacuum states using a standard Bell-test setup, and quantum correlations are observed for conjugate polarization-frequency modes. We further test the entanglement witnesses for these states and demonstrate the violation of the separability criteria, which infers that all of the macroscopic Bell states, containing typically 10(6) photons per pulse, are polarization entangled. The study also reveals the symmetry of macroscopic Bell states with respect to local polarization transformations. DOI: 10.1103/PhysRevA.87.032110
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页数：5
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