论文标题
量子干扰的区分性和混合性
Distinguishability and mixedness in quantum interference
论文作者
论文摘要
我们研究了区分性和混合性的影响 - 量子状态的两个基本特性 - 对量子干扰。我们表明，这些可以以不同的方式影响多个颗粒的干扰，从而导致仅在两个粒子的干扰中观察到的影响。通过在纯净和混合状态下干扰三个独立的光子并观察其不同的多光子干扰，尽管表现出相同的两光子hong-ou-mandel（hom）干扰，但通过实验证明了这一点。除了其基本相关性外，我们的观察结果对依赖于光子干扰的量子技术具有重要意义。
We study the impact of distinguishability and mixedness -- two fundamental properties of quantum states -- on quantum interference. We show that these can influence the interference of multiple particles in different ways, leading to effects that cannot be observed in the interference of two particles alone. This is demonstrated experimentally by interfering three independent photons in pure and mixed states and observing their different multiphoton interference, despite exhibiting the same two-photon Hong-Ou-Mandel (HOM) interference. Besides its fundamental relevance, our observation has important implications for quantum technologies relying on photon interference.
