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Optimal and robust control of quantum state transfer by shaping the spectral phase of ultrafast laser pulses

机译:超快激光脉冲的谱相,通过塑造量子状态传递的最佳和鲁棒控制

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摘要

Achieving fast and efficient quantum state transfer is a fundamental task in physics, chemistry and quantum information science. However, the successful implementation of the perfect quantum state transfer also requires robustness under practically inevitable perturbative defects. Here, we demonstrate how an optimal and robust quantum state transfer can be achieved by shaping the spectral phase of an ultrafast laser pulse in the framework of frequency domain quantum optimal control theory. Our numerical simulations of the single dibenzoterrylene molecule as well as in atomic rubidium show that optimal and robust quantum state transfer via spectral phase modulated laser pulses can be achieved by incorporating a filtering function of the frequency into the optimization algorithm, which in turn has potential applications for ultrafast robust control of photochemical reactions.
机译:实现快速高效的量子状态转移是物理,化学和量子信息科学中的基本任务。 然而,完美量子转移的成功实施也需要在几乎不可避免的扰动缺陷下的鲁棒性。 这里,我们通过在频域量子最优控制理论框架中塑造超快激光脉冲的光谱相来实现如何实现最佳和鲁棒量子状态转移。 我们的单二苯并丙烯醛分子以及原子铷的数值模拟表明,通过将频率的滤波功能结合到优化算法,可以实现通过光谱相位调制激光脉冲的最佳和鲁棒量子状态传递,这反过来又具有潜在的应用 用于超快的光化学反应控制。

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  • 作者单位

    Changsha Univ Sci &

    Technol Sch Phys &

    Elect Sci Changsha 410114 Hunan Peoples R China;

    Univ New South Wales Sch Engn &

    Informat Technol Canberra ACT 2600 Australia;

    Univ New South Wales Sch Engn &

    Informat Technol Canberra ACT 2600 Australia;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 物理学;化学;
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