论文标题
原子干涉测定法的动量纠缠
Momentum Entanglement for Atom Interferometry
论文作者
论文摘要
与光干涉仪相比，冷原子干涉仪中的通量较低，相关的射击噪声较大。超出这些限制的敏感性需要在不同动量模式下制备纠缠原子。在这里，我们演示了与最新干涉仪兼容的纠缠原子的来源。纠缠从Bose-Einstein凝结的自由度转移到了分离良好的动量模式，以-3.1（8）dB的挤压参数见证。纠缠增强的原子干涉仪为量子梯度仪或重力波检测器开辟了前所未有的敏感性。
Compared to light interferometers, the flux in cold-atom interferometers is low and the associated shot noise large. Sensitivities beyond these limitations require the preparation of entangled atoms in different momentum modes. Here, we demonstrate a source of entangled atoms that is compatible with state-of-the-art interferometers. Entanglement is transferred from the spin degree of freedom of a Bose-Einstein condensate to well-separated momentum modes, witnessed by a squeezing parameter of -3.1(8) dB. Entanglement-enhanced atom interferometers open up unprecedented sensitivities for quantum gradiometers or gravitational wave detectors.
