We investigate the circuit quantum electrodynamics of anharmonic superconducting nanowire oscillators. The sample circuit consists of a capacitively shunted nanowire with a width of about 20 nm and a varying length up to 350 nm, capacitively coupled to an on-chip resonator. By applying microwave pulses we observe Rabi oscillations, measure coherence times and the anharmonicity of the circuit. Despite the very compact design, simple top-down fabrication and high degree of disorder in the oxidized (granular) aluminum material used, we observe lifetimes in the microsecond range.

中文翻译：

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超导纳米线电路中的拉比振荡

我们研究了非谐超导纳米线振荡器的电路量子电动力学。采样电路由一条电容分路的纳米线组成，该电容线宽约20 nm，长度可变至350 nm，并与片上谐振器电容耦合。通过施加微波脉冲，我们观察了拉比振荡，测量了相干时间和电路的非谐性。尽管非常紧凑的设计，简单的自上而下的制造以及所使用的氧化（颗粒）铝材料的高度无序性，但我们观察到的寿命在微秒范围内。