题目：Multi-Photon Interference and its Relationship with Indistinguishability, and Optical Coherence

报告人：Prof. Ze-Yu Ou （Indiana Purdue University， U.S.A.）
               
摘要：
A number of recent interference experiments involving multiple photons are reviewed.  These experiments include generalized photon bunching effects, generalized Hong-Ou-Mandel interference effects and multi-photon interferometry for demonstrations of multi-photon de Broglie wavelength. The multi-photon states used in these experiments are from two pairs of photons in parametric down-conversion. We find that the size of the interference effect in these experiments, characterized by the visibility of the interference pattern, is governed by the degree of distinguishability among different pairs of photons. Based on this discovery, we generalize the concept of multi-photon temporal distinguishability and relate it to a number of multi-photon interference effects. Finally, we make an attempt to interpret the coherence theory by multi-photon interference via the concept of temporal distinguishability of photons.

Prof. Ze-Yu Ou 简介：
区泽宇教授毕业于北京大学物理系，在美国Rochester大学L. Mandel的指导下获得博士学位，现任Indiana Purdue大学物理系教授。他在量子光学研究领域有突出的业绩，包括Bell不等式的验证、EPR佯谬的演示、多光子纠缠态的产生、等等。并已发表文章70多篇，其中PRL有10篇，参与编写书与专著12本，作邀请报告近50次。

时间：2009年1月9日（星期五）下午3：30  
地点：中科院物理研究所D楼210会议室
联系人：吴令安  研究员（Tel：82649334）
金奎娟  研究员（Tel：82648099）
主办单位：中国科学院光物理重点实验室