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arXiv 2008.06435quant-phphysics.atom-ph
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级联连续驱动量子模控制观测高阶Mollow三重态

Observation of high-order Mollow triplet by quantum mode control with concatenated continuous driving

Guoqing Wang, Yi-Xiang Liu, Paola Cappellaro

摘要:

莫洛三重态是量子光学的基本特征,并且已经在许多量子系统中观察到。虽然它出现在量子化场的“强驱动”机制中,其中原子经历相干振荡,但它通常可以在旋转波近似下进行分析。在这里,我们报告的第一个观察到的高阶效应的Mollow三重态结构,由于强驱动。在实验中,我们探索的制度以外的旋转波近似使用级联连续驱动,驱动场功率的要求不那么严格。然后,我们能够揭示额外的过渡频率,在能级的变化,和过渡振幅的校正。特别是,我们发现,这些振幅是更敏感的高阶效应比频移,他们仍然需要一个准确的确定,以实现高保真度的量子控制。实验结果得到了Floquet理论的验证,该理论能够精确地数值模拟自旋的演化过程,并进一步提供了一个有效哈密顿量的解析形式,该哈密顿量可以近似地预测自旋动力学,而不是旋转波近似.

英文摘要:

The Mollow triplet is a fundamental signature of quantum optics, and has been observed in numerous quantum systems. Although it arises in the 'strong driving' regime of the quantized field, where the atoms undergo coherent oscillations, it can be typically analyzed within the rotating wave approximation. Here we report the first observation of high-order effects in the Mollow triplet structure due to strong driving. In experiments, we explore the regime beyond the rotating wave approximation using concatenated continuous driving that has less stringent requirements on the driving field power. We are then able to reveal additional transition frequencies, shifts in energy levels, and corrections to the transition amplitudes. In particular, we find that these amplitudes are more sensitive to high-order effects than the frequency shifts, and that they still require an accurate determination in order to achieve high-fidelity quantum control. The experimental results are validated by the Floquet theory, which enables the precise numerical simulation of the evolution and further provides an analytical form for an effective Hamiltonian that approximately predicts the spin dynamics beyond the rotating wave approximation.

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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