Quantum control with intense X-ray pulses: A theoretical approach

强 X 射线脉冲的量子控制：理论方法

• 批准号: 281290486
• 负责人: Professor Dr. Jan Michael Rost
• 金额: --
• 依托单位: Max-Planck-Institut für Physik komplexer Systeme
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 2015
• 资助国家: 德国
• 起止时间: 2014-12-31 至 2018-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/281290486?language=en
• 关键词: Quantum; control; intense; ray; pulses

The goal of this project is to extend optimal control to the X-ray regime, i.e., beyond the well established coherent control schemes based on near infrared laser pulses. Pulses in this new regime have typically bandwidths, available for pulse shaping, which are much smaller than the carrier frequency. It will be explored if and how optimal control can be made possible under these conditions. The theoretical investigations will be based on the so-called envelope Hamiltonian. This Hamiltonian separates the effect of the oscillations of the electric field with the carrier frequency from the effect of the envelope of the laser pulse. Thereby, it directly takes advantage of the aforementioned characteristic difference of bandwidth and carrier frequency in the high-frequency domain.After formulating the envelope Hamiltonian for high frequencies the most suitable control scheme in connection with the envelope Hamiltonian have to be identified and implemented numerically. In order to gain insight into the optimal control mechanisms the dynamics will be described in terms of a perturbation theory. It remains to be studied whether the perturbative approach can be directly used for optimal control. Whereas most of these studies will be done for test cases, ultimately the performance of the X-ray optimal control has to be applied to realistic systems, to be identified.

该项目的目标是将最佳控制扩展到X射线领域，即，超越了基于近红外激光脉冲的成熟相干控制方案。这种新机制中的脉冲通常具有可用于脉冲整形的带宽，其比载波频率小得多。它将探讨在这些条件下是否以及如何实现最优控制。理论研究将基于所谓的包络哈密顿量。该哈密顿量将具有载波频率的电场的振荡的影响与激光脉冲的包络的影响分开。因此，它直接利用了上述的特性差异的带宽和载波频率在高频域。制定后的包络哈密顿量为高频率的最合适的控制方案与包络哈密顿量必须被识别和数字实现。为了深入了解最优控制机制的动态将被描述的扰动理论。微扰方法能否直接用于最优控制还有待研究。虽然这些研究中的大多数都是针对测试用例进行的，但最终X射线最优控制的性能必须应用于实际系统，以进行识别。