论文标题
原子在旅行灯中行走
Atom walking in a traveling-wave light
论文作者
论文摘要
在本文中，我们研究了考虑到每个原子的超细单原子的机械运动，连贯耦合到行进波光。该系统中的主要噪声源自多普勒的宽阔，这是由于原子波包的连续动量分布而引起的。在这里，事实证明，在强耦合方案中，多普勒扩大可以有效地抑制。在连贯的耦合下，单个中性原子定期沿明确的方向行走。运动的方向取决于与光学转变有关的两个内部状态中原子的占用，因为原子会受到内部状态的有吸引力或排斥力的影响。它类似于作用于负电荷颗粒上的电力。我们用隐藏在我们的哈密顿量中的原子的自旋轨道耦合来解释它们。这些结果在构建未来的原子设备方面具有潜在的应用。
In this paper, we investigate mechanical motion of ultra-slow single atoms considering each atom is coherently coupled to a traveling-wave light. The main noise in this system is originated from Doppler broadening due to the continuous momentum distribution in atom wave packet. Here, it is proved that the Doppler broadening could be effectively suppressed in strong coupling regime. Under the coherent coupling, individual neutral atoms periodically walk in a definite direction. Direction of the motion depends on occupation of the atom in its two internal states related to the optical transition, since the atom would be affected by attractive or repulsive forces depending on the internal states. It is analogous to the electric force acting on negatively or positively charged particles. We explain them with spin-orbit coupling of atoms which is hidden in our Hamiltonian. These results have potential applications for the construction of future atomic devices.
