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arXiv 1709.00652quant-phcs.SYeess.SYphysics.atom-ph
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通过频谱相位优化实现鲁棒且高保真的量子控制

Achieving robust and high-fidelity quantum control via spectral phase optimization

School of Physics and Electronic Science, Changsha University of Science and Technology(长沙理工大学物理与电子科学学院)

Yu Guo, Daoyi Dong, Chuan-Cun Shu

AI总结:

本文提出通过优化超快激光脉冲的频谱相位,实现量子系统的鲁棒且高保真控制,验证了该方法在二能级和三能级原子系统中的有效性。

摘要:

实现量子系统的高保真控制在物理、化学和量子信息科学中具有根本重要性。然而,成功的高保真量子控制方案的实现还需要对控制场波动具有鲁棒性。本文展示了一种通过优化超快激光脉冲的频谱相位来实现量子系统鲁棒优化的方法,该方法在频域量子最优控制理论框架内完成。通过将频率滤波函数纳入优化算法,本文在抽象的二能级量子系统以及三能级铷原子系统中进行数值模拟,证明优化过程能够强制搜索最优解,同时在控制场波动下表现出显著的鲁棒性,为高效优化超快激光脉冲的频谱相位以实现所需最终量子态提供了有效途径。

英文摘要:

Achieving high-fidelity control of quantum systems is of fundamental importance in physics, chemistry and quantum information sciences. However, the successful implementation of a high-fidelity quantum control scheme also requires robustness against control field fluctuations. Here, we demonstrate a robust optimization method for control of quantum systems by optimizing the spectral phase of an ultrafast laser pulse, which is accomplished in the framework of frequency domain quantum optimal control theory. By incorporating a filtering function of frequency into the optimization algorithm, our numerical simulations in an abstract two-level quantum system as well as in a three-level atomic rubidium show that the optimization procedure can be enforced to search optimal solutions while achieving remarkable robustness against the control field fluctuations, providing an efficient approach to optimize the spectral phase of the ultrafast laser pulse to achieve a desired final quantum state of the system.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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