Quantum Zeno Suppression of Intramolecular Forces.
Quantum Zeno Suppression of Intramolecular Forces.
复制标题
分子内力的量子芝诺抑制。
DOI：
--
复制
发表时间：
2016
影响因子：
8.6
通讯作者：
S. Wuster
中科院分区：
文献类型：
--
作者：
S. Wuster
我们发现，玻恩-奥本海默表面本质上可以退相干，这意味着组成电子基态之间的相干性损失。我们考虑的例子，由于共振偶极-偶极相互作用的原子间力的高度激发的里德伯原子的二聚体，嵌入在超冷气体。这些力量依赖于一个相干叠加的两个原子的电子状态，这是破坏了连续监测的二聚体状态通过检测方案利用背景气体原子。我们发现，这种内在的退相干的分子能量表面可以逐渐恶化的排斥二聚体状态，造成吸引力和排斥字符的混合。对于足够强的退相干，类泽诺效应导致原子间力的完全停止。最后，我们展示了如何短的散肩脉冲可以可控地重新分配不同的分子能量表面之间的人口。
We show that Born-Oppenheimer surfaces can intrinsically decohere, implying loss of coherence among constituent electronic basis states. We consider the example of interatomic forces due to resonant dipole-dipole interactions within a dimer of highly excited Rydberg atoms, embedded in an ultracold gas. These forces rely on a coherent superposition of two-atom electronic states, which is destroyed by continuous monitoring of the dimer state through a detection scheme utilizing the background gas atoms. We show that this intrinsic decoherence of the molecular energy surface can gradually deteriorate a repulsive dimer state, causing a mixing of attractive and repulsive character. For sufficiently strong decoherence, a Zeno-like effect causes a complete cessation of interatomic forces. We finally show how short decohering pulses can controllably redistribute population between the different molecular energy surfaces.