论文标题
广义多通道光学定理：总散射横截面的连贯控制
Generalized multichannel optical theorem: Coherent control of the total scattering cross section
论文作者
论文摘要
光学定理是量子散射理论的一个基本方面。在这里，我们将该定理推广到事件散射状态是碰撞伙伴内部状态的叠加的情况下，引入了其他干扰贡献，例如提供控制总积分横截面的途径。就像以其标准形式一样，正向散射在广义光学定理中起着至关重要的作用，但是干扰术语与初始叠加中状态之间的无弹性向前散射幅度有关。使用所得的控制指数，我们表明，对于氧气分子在其反振动基态和85RB-85RB碰撞中的超低碰撞中，可以进行广泛的控制，这是对总散射截面的量子干扰控制的首次实验性的有希望的系统。
The optical theorem is a fundamental aspect of quantum scattering theory. Here, we generalize this theorem to the case where the incident scattering state is a superposition of internal states of the collision partners, introducing additional interference contributions and, e.g., providing a route to control the total integral cross section. As in its standard form, forward scattering plays an essential role in the generalized optical theorem, but with interference terms being related to the inelastic forward scattering amplitudes between states in the initial superposition. Using the resultant control index, we show that extensive control is possible over ultracold collisions of oxygen molecules in their rovibrational ground states, and of 85Rb-85Rb collisions, promising systems for the first experimental demonstration of the quantum interference control of the total scattering cross section.
