论文标题
纠缠增强的光原子钟
Entanglement-Enhanced Optical Atomic Clocks
论文作者
论文摘要
原子物理学的最新发展使多体纠缠状态的实验生成能够提高量子传感器的性能，超过标准量子极限（SQL）。该极限是由量子测量的固有投影噪声施加的。在本角度文章中，我们描述了常用的实验方法，以创建多体纠缠状态，以操作SQL以外的量子传感器。特别是，我们专注于将量子纠缠应用于最先进的光原子时钟的潜力。此外，我们提出了最近开发的时间反转协议，这些方案使用具有高量子渔民信息的复杂状态，而无需子sql测量分辨率。我们讨论了基于此类协议的量子计量学限制量子计量的前景。
Recent developments in atomic physics have enabled the experimental generation of many-body entangled states to boost the performance of quantum sensors beyond the Standard Quantum Limit (SQL). This limit is imposed by the inherent projection noise of a quantum measurement. In this perspective article, we describe the commonly used experimental methods to create many-body entangled states to operate quantum sensors beyond the SQL. In particular, we focus on the potential of applying quantum entanglement to state-of-the-art optical atomic clocks. In addition, we present recently developed time-reversal protocols that make use of complex states with high quantum Fisher information without requiring sub-SQL measurement resolution. We discuss the prospects for reaching near-Heisenberg limited quantum metrology based on such protocols.
