Thermal light subwavelength diffraction using positive and negative correlations
Thermal light subwavelength diffraction using positive and negative correlations
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使用正相关和负相关的热光亚波长衍射
DOI：
10.3788/col201614.040301
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发表时间：
2016-04-10
影响因子：
3.5
通讯作者：
Wu, Ling'an
中科院分区：
文献类型：
--
作者：
Sun, Mingjie;He, Xingdan;Wu, Ling'an
受Hanbury Brown和Twiss效应的启发，鬼成像和衍射由于其非局域特性和亚波长分辨能力而在经典和量子光学领域都具有潜力，因此引起了人们的特别兴趣。通过扩展对应成像方案，我们利用衍射中的正负强度相关性，利用赝热光进行亚波长衍射。在实验中，亚波长（λ/2）的分辨率和更好的信号-噪声比（10.3%的改善）同时实现。该方案可以用作现有鬼像成像方案的补充，以提高图像质量。
Ghost imaging and diffraction, inspired by the Hanbury Brown and Twiss effect, have potential in both classical and quantum optics regimes on account of their nonlocal characteristics and subwavelength resolution capability, and therefore have aroused particular interest. By extending the correspondence imaging scheme, we utilize the positive and negative intensity correlations in diffraction and perform subwavelength diffraction with pseudo-thermal light. In the experiment, a subwavelength (lambda/2) resolution and a better signal-to-noise ratio (10.3% improvement) are simultaneously achieved. The scheme can be utilized as a complement to the existing ghost imaging scheme to improve image quality.