Fourth-Order Interference in Femtosecond Spontaneous Parametric Down-Conversion

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2000,（10）
• 所属期刊栏目: Fundamental areas of phenomenology
• 页码范围: 726-727
• 页数: 2页
• 语种: 英文

摘要

We report a fourth-order interference experiment in which pairs of photons are produced in spontaneous parametric down-conversion pumped by femtosecond pulses interfere in a Hong-Ou-Mandel interferometer. The visibilityof the interference is (64±4)%, exceeding the bound of 50% predicted by classical interference theory.