Robust Ghost Imaging Based on Degenerate Spontaneous Parametric Down-Conversion

被引：0

作者：

孔令军 ^{[1
]}

司宇 ^{[1
]}

刘瑞 ^{[1
]}

王周祥 ^{[1
]}

齐文荣 ^{[1
]}

涂成厚 ^{[1
]}

李勇男 ^{[1
]}

王慧田 ^{[1
,2
,3
]}

机构：

[1] School of Physics and Key Laboratory of Weak Light Nonlinear Photonics,Nankai University

[2] National Laboratory of Solid State Microstructures and School of Physics,Nanjing University

[3] Collaborative Innovation Center of Advanced Microstructures, Nanjing University

来源：

Chinese Physics Letters | 2017年 / 05期

基金：

中国国家自然科学基金;

关键词：

BBO;

D O I：

暂无

中图分类号：

O431.2 [量子光学];

学科分类号：

070207 ; 0803 ;

摘要：

In traditional ghost imaging, the entangled photon pairs produced from the spontaneous parametric down conversion(SPDC) process are used. There is an intrinsic disadvantage that the utilization efficiency of the photon pairs is very low. Inasmuch as all the correlated photon pairs produced by the degenerate SPDC process can be used to record the image of an object, the ghost imaging scheme we present here has a higher utilization efficiency of the photon pairs. We also investigate the robustness of our experimental scheme. The experimental results show that, no matter whether the photon-pair source is two light cones or two beam-like spots, the clear image of the object can be obtained. The slight rotation of the nonlinear crystal has no influence on the imaging quality.Our experimental results also demonstrate that when the part of the photon-pair source in the signal path or the idler path is blocked by unwanted things, the clear ghost image of the object can still be recorded.

引用

页码：75 / 78

页数：4