论文标题
部分可观测时空混沌系统的无模型预测
Generation of spin squeezing via a fully quantum degenerate parametric amplifier
论文作者
论文摘要
旋转挤压是实现高精度计量学的最有吸引力的方法之一。在本文中，我们提出了一种协议，用于通过完全量子变性的参数放大器在原子集合中产生自旋挤压。我们讨论在不驱动泵空腔的情况下产生自旋挤压的特性。数值仿真结果表明，生成的自旋挤压强度相当可观，并且能够与使用两轴扭曲（TAT）模型获得的旋转强度相当。此外，我们通过引入相应的实验参数来证明该协议在实验上是可行的。因此，提出的协议提供了一种有希望的方法，可以实现光子旋转耦合系统中的自旋挤压。
Spin squeezing is one of the most attractive methods for realizing high-precision metrology. In this paper, we propose a protocol for generating spin squeezing in an atomic ensemble via a fully quantum degenerate parametric amplifier. We discuss the properties of generating spin squeezing with and without driving the pump cavity. Numerical simulation results show that the generated spin squeezing strength is sizable, and is able to be comparable to that obtained using a two-axis twisting (TAT) model. Moreover, we demonstrate that the protocol is experimentally feasible by introducing the corresponding experimental parameters. Therefore, the proposed protocol provides a promising approach to realize spin squeezing in photon-spin coupling systems.
