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Rabi-resonant behavior of periodically driven correlated fermion systems

机译:周期性相关的费米偏振系统的Rabi-共振行为

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摘要

A Fermi-Hubbard system with a periodically-modulated interaction has been recently shown to resonantly absorb energy at a series of drive frequencies. In the present work, with the help of static perturbation theory, we argue that driving couples to Hubbard bands in a similar fashion as a classical field couples to a two-level atom. The latter, significantly simpler setup, described by the Rabi model, is known to support resonant rapid energy absorption at virtually the same series of driving frequencies. Our interpretation is also supported by the equivalency between dynamics of the two-site periodically driven Hubbard and Rabi models. Relying on this insight, we establish that the same Rabi-resonant behavior is displayed also by fermions confined in a harmonic trap with periodically driven contact interactions.
机译:最近已经显示了具有定期调制相互作用的Fermi-Hubbard系统,以谐振在一系列驱动频率下吸收能量。在目前的工作中,在静态扰动理论的帮助下,我们认为以类似的方式驾驶到哈宾德乐队,作为古典领域伴有两级原子。所知,后者,明显更简单地设置,以支持在几乎相同系列驱动频率下的谐振快速能量吸收。我们的解释也得到了双网站定期驱动的哈贝德和RABI模型的动态之间的等效。依靠这种洞察力,我们建立了相同的rabi-共振行为也被围绕谐波陷阱限制在具有周期性驱动的接触相互作用。

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  • 来源
    《Physical review》 |2019年第4期|041116.1-041116.6|共6页
  • 作者单位

    Polish Acad Sci Inst Phys Int Res Ctr MagTop Aleja Lotnikow 32-46 PL-02668 Warsaw Poland;

    Polish Acad Sci Inst Phys Int Res Ctr MagTop Aleja Lotnikow 32-46 PL-02668 Warsaw Poland;

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