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arXiv 2108.06241cond-mat.mes-hallquant-ph
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量子机电系统中的多声子跃迁

Multiphonon transitions in a quantum electromechanical system

Alpo Välimaa, Wayne Crump, Mikael Kervinen, Mika A. Sillanpää

AI总结:

本文研究近共振耦合于量子声学系统的超导量子比特,通过观测多声子跃迁谱的非经典特征证实GHz声波量子化并实现声子计数,同时在高驱动下发现多跃迁修饰引起的谱线偏移。

摘要:

我们研究了在近共振构型下与量子声学系统耦合的超导量子比特。在该系统中,我们测量了多声子跃迁,其谱线呈现出明显的非经典特征,从而为GHz声波的量子化提供了直接证据,并使声子计数成为可能。此外,在与量子比特-振荡器耦合强度相当的高驱动振幅下,我们观察到由于许多多声子跃迁的修饰而导致的多声子谱线偏移。

英文摘要:

We investigate a superconducting qubit coupled to a quantum acoustic system in a near resonant configuration. In our system we measure multiphonon transitions, whose spectrum reveals distinctly nonclassical features and thus provides direct evidence of quantization of GHz sound, enabling phonon counting. Additionally, at a high driving amplitude comparable to the qubit-oscillator coupling, we observe a shift of the multiphonon spectral lines owing to dressing of many multiphonon transitions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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