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Sub-wavelength interference in macroscopic observation

被引：21
作者：
Cao, DZ
Wang, KG
机构：
[1] CCAST, World Lab, Beijing 100080, Peoples R China
[2] Beijing Normal Univ, Dept Phys, Appl Opt Beijing Area Major Lab, Beijing 100875, Peoples R China
来源：
PHYSICS LETTERS A | 2004年 / 333卷 / 1-2期
基金：
中国国家自然科学基金;
关键词：
sub-wavelength interference; spontaneous parametric down-conversion; Young's double-slit interference;
D O I：
10.1016/j.physleta.2004.10.020
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We study the generalized Young's double-slit interference for the beam produced in the spontaneous parametric down-conversion (SPDC). It has been found that the sub-wavelength interference can occur macroscopically in both the two-photon intensity measurement and the single-photon spatial intensity-correlation measurement. The former refers to the quantum entanglement and the latter originates from the thermal spatial correlation. We show the visibility and the strength of the interference fringe related to the SPDC interaction, which may provide a strong sub-wavelength lithography with a moderate visibility in practical application. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：23 / 29
页数：7
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