Bifurcation, mode coupling and noise in a nonlinear multimode superconducting microwave resonator
Bifurcation, mode coupling and noise in a nonlinear multimode superconducting microwave resonator
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非线性多模超导微波谐振器中的分岔、模式耦合和噪声
DOI：
10.1063/1.4818123
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发表时间：
2013
影响因子：
4
通讯作者：
Tancredi G
中科院分区：
文献类型：
--
作者：
Tancredi G
在谐振腔中加入非线性为谐振模式的复杂动力学行为提供了一条途径，包括它们之间的耦合。我们提出了一种超导装置，利用约瑟夫森结的非线性，在薄膜共面波导谐振器中引入可控的、可调谐的非线性电感。考虑到该器件作为微波领域的潜在量子光学元件，我们创建了一个敏感的分岔放大器，然后通过模间耦合演示了其他谐振模式的光谱。我们发现该器件的灵敏度接近于Dykman量子模型的两个定量因子，但受到芯片上有其源的噪声的限制。
The addition of nonlinearity to an harmonic resonator provides a route to complex dynamical behaviour of resonant modes, including coupling between them. We present a superconducting device that makes use of the nonlinearity of Josephson junctions to introduce a controlled, tunable, nonlinear inductance to a thin film coplanar waveguide resonator. Considering the device as a potential quantum optical component in the microwave regime, we create a sensitive bifurcation amplifier and then demonstrate spectroscopy of other resonant modes via the intermode coupling. We find that the sensitivity of the device approaches within a factor two quantitative agreement with a quantum model by Dykman, but is limited by a noise that has its source(s) on-chip.
影响因子：
3.7
作者：
Anton, S. M.;Mueller, C.;Clarke, John
通讯作者：
Clarke, John