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arXiv 1802.09259quant-phcond-mat.mes-hall
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参量驱动超导谐振器中的周期倍增

Period multiplication in a parametrically driven superconducting resonator

Ida-Maria Svensson, Andreas Bengtsson, Jonas Bylander, Vitaly Shumeiko, Per Delsing

摘要:

本文报道了参量驱动可调谐超导谐振器中周期倍增的实验观察。我们调制的磁通量通过超导量子干涉装置,连接到一个四分之一波长的谐振器,与频率$nω$接近的倍数,$n=2,\,3,\,4,\,5$,谐振器的基本模式和观察强烈的输出辐射在$ω$。输出场相对于相位表现出$n$倍简并性,$n$态相对于彼此相移$2π/n$。我们的演示验证了Guo等人在PRL 111,205303(2013)中的理论预测,并为利用微波光子设计复杂的宏观量子猫态铺平了道路。

英文摘要:

We report on the experimental observation of period multiplication in parametrically driven tunable superconducting resonators. We modulate the magnetic flux through a superconducting quantum interference device, attached to a quarter-wavelength resonator, with frequencies $nω$ close to multiples, $n=2,\,3,\,4,\,5$, of the resonator fundamental mode and observe intense output radiation at $ω$. The output field manifests $n$-fold degeneracy with respect to the phase, the $n$ states are phase shifted by $2π/n$ with respect to each other. Our demonstration verifies the theoretical prediction by Guo et al. in PRL 111, 205303 (2013), and paves the way for engineering complex macroscopic quantum cat states with microwave photons.

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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