论文标题
双原子超导的人工分子的亮色
Light-dressing of a diatomic superconducting artificial molecule
论文作者
论文摘要
在这项工作中，我们照射了一个由两个带有微波光的可调式传输组成的超导性人造分子，同时通过关节色散读数监测其状态。进行高功率光谱，我们观察并确定了多种单一和多光子过渡。我们还发现，在某些通量下，系统的测量光谱显着偏离固定schrödinger方程的溶液而无需驾驶。我们通过以数值求解稳态的完整主方程来重现这些异常的光谱特征，并将它们归因于类似自动镇的效果，在这种效果中，单个音调同时介绍了系统并探测新的特征态之间的过渡。我们表明，可以通过求解旋转框架中的自洽方程来分析卫星光谱线出现的确切频率。我们的方法与实验和数值模拟都很好。
In this work, we irradiate a superconducting artificial molecule composed of two coupled tunable transmons with microwave light while monitoring its state via joint dispersive readout. Performing high-power spectroscopy, we observe and identify a variety of single- and multiphoton transitions. We also find that at certain fluxes, the measured spectrum of the system deviates significantly from the solution of the stationary Schrödinger equation with no driving. We reproduce these unusual spectral features by solving numerically the full master equation for a steady-state and attribute them to an Autler-Townes-like effect in which a single tone is simultaneously dressing the system and probing the transitions between new eigenstates. We show that it is possible to find analytically the exact frequencies at which the satellite spectral lines appear by solving self-consistent equations in the rotating frame. Our approach agrees well with both the experiment and the numerical simulation.
