Multiphoton dressing of an anharmonic superconducting many-level quantum circuit
Multiphoton dressing of an anharmonic superconducting many-level quantum circuit
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DOI：
10.1103/physrevb.91.054523
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发表时间：
2015-02-26
影响因子：
3.7
通讯作者：
Weides, Martin
中科院分区：
文献类型：
--
作者：
Braumueller, Jochen;Cramer, Joel;Weides, Martin
我们报告的超导非谐波多电平电路，耦合到一个谐波读出谐振器的调查。我们观察多光子跃迁通过我们的系统的虚拟能级到第五激发态。定量地分析了这些高阶激发对读出器件的反作用，结果与理论预期相符。通过施加强微波驱动，我们实现了多光子敷料在我们的非谐电路，这是动态耦合的弱探测音。新兴的高阶拉比边带和相关的Autler-Townes分裂涉及到五个级别的调查非谐波电路观察。实验结果与主方程模拟吻合良好。
We report on the investigation of a superconducting anharmonic multilevel circuit that is coupled to a harmonic readout resonator. We observe multiphoton transitions via virtual energy levels of our system up to the fifth excited state. The back-action of these higher-order excitations on our readout device is analyzed quantitatively and demonstrated to be in accordance with theoretical expectation. By applying a strong microwave drive we achieve multiphoton dressing within our anharmonic circuit which is dynamically coupled by a weak probe tone. The emerging higher-order Rabi sidebands and associated Autler-Townes splittings involving up to five levels of the investigated anharmonic circuit are observed. Experimental results are in good agreement with master-equation simulations.