Two-dimensional characterization of spatially entangled photon pairs

被引:12
|
作者
Ostermeyer, M. [1 ]
Korn, D. [1 ]
Puhlmann, D. [1 ]
Henkel, C. [1 ]
Eisert, J. [1 ]
机构
[1] Univ Potsdam, Inst Phys & Astron, D-14476 Potsdam, Germany
关键词
higher-order spatial modes; spatial entanglement; covariance; QUANTUM; POPPERS;
D O I
10.1080/09500340903359962
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We characterize the entanglement in position and momentum of photon pairs generated in type-II parametric down-conversion. Coincidence maps of the photon positions in the near-field and far-field planes are observed in two transverse dimensions using scanning fiber probes. We estimate the covariance matrix of an effective two-mode system and apply criteria for entanglement based on covariance matrices to certify space-momentum entanglement. The role of higher-order spatial modes for observing spatial entanglement between the two photons is discussed.
引用
收藏
页码:1829 / 1837
页数:9
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