论文标题
有效的动态和量子状态工程通过定期踢
Effective dynamics and quantum state engineering by periodic kicks
论文作者
论文摘要
我们研究了定期驱动的量子系统的踢动力学，并提供了具有分析形式的时间独立有效的哈密顿量，以合理地描述长时间的有效动力学。结果表明，在某些参数区域中，有效耦合强度可能比原始系统的耦合强度大得多，这源于踢的零持续时间。此外，只能通过调节周期性的踢球时期，可以在相同的三级系统中相互转化不同的机制。特别是，激发状态的人口可以在定期踢球中被选择性地抑制，从而受益于原始系统的庞大令人失望的制度。最后，在量子系统中证明了某些应用和定期踢球的物理实施。这些独特的功能将使周期性的踢球成为量子状态工程的强大工具。
We study the kick dynamics of periodically driven quantum systems, and provide a timeindependent effective Hamiltonian with the analytical form to reasonably describe the effective dynamics in a long timescale. It is shown that the effective coupling strength can be much larger than the coupling strength of the original system in some parameter regions, which stems from the zero time duration of kicks. Furthermore, different regimes can be transformed from and to each other in the same three-level system by only modulating the period of periodic kicks. In particular, the population of excited states can be selectively suppressed in periodic kicks, benefiting from the large detuning regime of the original system. Finally, some applications and physical implementation of periodic kicks are demonstrated in quantum systems. Those unique features would make periodic kicks becoming a powerful tool for quantum state engineering.
