论文标题
超速极性分子之间碰撞的两光子光学屏蔽
Two-photon optical shielding of collisions between ultracold polar molecules
论文作者
论文摘要
我们提出了一种使用光场在超低地面分子之间进行排斥长距离相互作用的方法，从而防止了短距离碰撞损失。它将最近用于碰撞屏蔽的微波耦合映射到两光子过渡上，并利用光学控制技术。与单光子光屏蔽相反[Phys。莱特牧师。 125，153202（2020）]，该方案避免了由于光子散射引起的分子气体加热。所提出的规程以23NA39K为例，应适用于大型的极性硅藻分子。
We propose a method to engineer repulsive long-range interactions between ultracold ground-state molecules using optical fields, thus preventing short-range collisional losses. It maps the microwave coupling recently used for collisional shielding onto a two-photon transition, and takes advantage of optical control techniques. In contrast to one-photon optical shielding [Phys. Rev. Lett. 125, 153202 (2020)], this scheme avoids heating of the molecular gas due to photon scattering. The proposed protocol, exemplified for 23Na39K, should be applicable to a large class of polar diatomic molecules.
