论文标题
测量相同的颗粒纠缠和反对称性的影响
Measurement of Identical Particle Entanglement and the Influence of Antisymmetrisation
论文作者
论文摘要
我们通过在多孔潜能中对几个粒子系统的测量进行对称性和纠缠之间的关系。特别是，考虑到两个或三个被困原子，我们测量和区分由两个不同的物理起源引起的相关性：纤毛波函数的反对称性和粒子之间的相互作用。我们通过状态的纠缠负态以及引入反对称的负性来量化这一点，这使我们能够了解对称性在测得的纠缠特性中所起的作用。我们将此概念应用于纯理论状态，并将两个或三个移动粒子的实验性重构密度矩阵中的一个概念应用到一系列光学镊子中。
We explore the relationship between symmetrisation and entanglement through measurements on few-particle systems in a multi-well potential. In particular, considering two or three trapped atoms, we measure and distinguish correlations arising from two different physical origins: antisymmetrisation of the fermionic wavefunction and interaction between particles. We quantify this through the entanglement negativity of states, and the introduction of an antisymmetric negativity, which allows us to understand the role that symmetrisation plays in the measured entanglement properties. We apply this concept both to pure theoretical states and to experimentally reconstructed density matrices of two or three mobile particles in an array of optical tweezers.
