论文标题
在被困的离子系统中测定多模式运动量子状态
Determination of Multi-mode Motional Quantum States in a Trapped Ion System
论文作者
论文摘要
被困的原子离子是通过将离子的内部状态与其运动耦合，用于研究旋转和玻色子之间的相互作用的多功能平台。具有多种模式的复杂运动状态的测量很具有挑战性，因为所有运动状态种群只能通过离子的自旋状态间接测量。在这里，我们提出了一种确定Fock状态分布并重建任意多模式运动状态的密度矩阵的通用方法。我们通过使用5个离子链中多个径向模式的不同纠缠状态来实验验证该方法。该方法可以扩展到具有Jaynes-Cummings类型交互的任何系统。
Trapped atomic ions are a versatile platform for studying interactions between spins and bosons by coupling the internal states of the ions to their motion. Measurement of complex motional states with multiple modes is challenging, because all motional state populations can only be measured indirectly through the spin state of ions. Here we present a general method to determine the Fock state distributions and to reconstruct the density matrix of an arbitrary multi-mode motional state. We experimentally verify the method using different entangled states of multiple radial modes in a 5-ion chain. This method can be extended to any system with Jaynes-Cummings type interactions.
