论文标题
有效的哈密顿量用于Stokes-Anti-Stokes对泵和探针偏振模式的生成
Effective Hamiltonian for Stokes--anti-Stokes pair generation with pump and probe polarized modes
论文作者
论文摘要
在相关的stokes中 - Anti-Stokes散射（SAS）入射光子与拉曼活性材料相互作用，在培养基中产生stokes spotive材料，并激发介质中的量子振动模式，在与第二个入射光子接触时，介质被向后灭绝，从而产生抗Stokes Photon。这可以通过真实和虚拟过程来完成。在实际过程中，Stokes和Anti-Stokes事件之间共享的量子模式是一个真实的粒子，而在虚拟过程中，这对形成是通过虚拟粒子的交换来介导的。在这里，我们介绍了一种哈密顿量，以描述两种类型的过程中的SAS散射中的对生产，当在泵和探针构型中被两个正交极化激光脉冲刺激时。我们还对Stokes事件中产生的振动的自然衰变的影响进行建模，并计算产生SAS对的概率。此外，我们通过将Stokes和Anti-Stokes场视为外部储层，遵循振动的动力学，从而获得了振动群体降低密度矩阵的主方程。最后，我们将我们的理论结果与最近发布的实验数据进行了比较。
In the correlated Stokes--anti-Stokes scattering (SAS) an incident photon interacts with a Raman-active material, creating a Stokes photon and exciting a quantum vibrational mode in the medium, which is posteriorly annihilated on contact with a second incident photon, producing in turn an anti-Stokes photon. This can be accomplished by real and virtual processes. In real process the quantum mode shared between the Stokes and anti-Stokes events is a real particle, whereas in virtual processes the pair formation is mediated by the exchange of virtual particles. Here, we introduce a Hamiltonian to describe the pair production in SAS scattering, for both types of process, when stimulated by two orthogonally polarized laser pulses in a pump-and-probe configuration. We also model the effect of the natural decay of the vibration created in the Stokes event and compute the probability of producing SAS pairs. Additionally, we follow the dynamics of the vibration by considering the Stokes and anti-Stokes fields as external reservoirs, obtaining thus a master equation for the reduced density matrix for the vibrational population. Finally, we compare our theoretical results with recently published experimental data.
