光子计数 regime 中空间涨落的亚散粒噪声相关性测量。

Measurement of sub-shot-noise correlations of spatial fluctuations in the photon-counting regime.

作者信息

Blanchet Jean-Luc, Devaux Fabrice, Furfaro Luca, Lantz Eric

机构信息

Institut FEMTO-ST, Département d'Optique PM Duffieux, UMR CNRS-Université de Franche-Comté, No. 6174, Route de Gray, 25030 Besançon Cedex, France.

出版信息

Phys Rev Lett. 2008 Dec 5;101(23):233604. doi: 10.1103/PhysRevLett.101.233604. Epub 2008 Dec 3.

DOI:10.1103/PhysRevLett.101.233604

PMID:19113553

Abstract

We have measured sub-shot-noise quantum correlations of spatial fluctuations in the far-field image of the parametric fluorescence created in a type I beta-barium-borate nonlinear crystal. Imaging is performed at very low light level (0.15 photons per pixel) with an electron multiplying charge coupled device camera. Experimental results overcome the standard quantum limit shot-noise level without subtraction of the variance of the detection noise.

摘要

我们测量了在I型β-硼酸钡非线性晶体中产生的参量荧光远场图像中空间涨落的亚散粒噪声量子关联。使用电子倍增电荷耦合器件相机在非常低的光水平（每像素0.15个光子）下进行成像。实验结果克服了标准量子极限散粒噪声水平，且未减去检测噪声的方差。