Some unique properties of superconducting devices are promising for the development of modern quantum technologies. Superconducting quantum circuits use large coupling constants and provide good scalability and controllability due to their macroscopic dimensions. Still, micro-fabrication methods have some hardship with reproducibility of identical superconducting quantum circuits. The dressed state approach presents some possibility to reduce influence of non-identity of qubits. We study a qubit-resonator system, when the qubit interacts with three signals. Such system configuration adds additional flexibility for circuit tunability. A particular realization of such a system is a superconducting flux qubit coupled to a transmission-line resonator driven by three signals. We describe this triply-driven system in terms of the dressed qubit states and conclude that using several signals can be beneficial for both system spectroscopy and tunability. Such study of a qubit-based system, coupled to both classical and quantum fields, can be useful for detection of individual itinerant microwave photons.

中文翻译：

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量子位谐振器系统的多信号光谱

超导器件的一些独特特性有望促进现代量子技术的发展。超导量子电路使用大的耦合常数，并由于其宏观尺寸而提供了良好的可扩展性和可控性。尽管如此，微制造方法在相同超导量子电路的可重复性方面存在一些困难。穿戴状态方法提供了一些减少量子位非同一性影响的可能性。我们研究了一个量子位谐振器系统，当量子位与三个信号相互作用时。这种系统配置增加了电路可调性的额外灵活性。这种系统的一个特殊实现是一个超导通量量子位耦合到一个由三个信号驱动的传输线谐振器。我们根据修饰的量子位状态描述了这个三重驱动系统，并得出结论，使用多个信号对系统光谱和可调谐性都有好处。这种对基于量子位的系统的研究，结合经典场和量子场，可用于检测单个流动微波光子。