Nonlinear Charge- and Flux-Tunable Cavity Derived From an Embedded Cooper-Pair Transistor
Nonlinear Charge- and Flux-Tunable Cavity Derived From an Embedded Cooper-Pair Transistor
复制标题
来自嵌入式库珀对晶体管的非线性电荷和磁通可调腔
DOI:
10.1103/physrevapplied.15.044009
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发表时间:
2021
影响因子:
4.6
通讯作者:
Rimberg, A.J.
中科院分区:
文献类型:
--
作者:
Brock, B.L.;Li, Juliang;Kanhirathingal, S.;Thyagarajan, B.;Braasch, William F.;Blencowe, M.P.;Rimberg, A.J.
We introduce the cavity-embedded Cooper-pair transistor (cCPT), a device that behaves as a highly nonlinear microwave cavity whose resonant frequency can be tuned both by charging a gate capacitor and by threading flux through a superconducting loop. We characterize this device and find excellent agreement between theory and experiment. A key difficulty in this characterization is the presence of frequency fluctuations comparable in scale to the cavity linewidth, which deform our measured resonance circles in accordance with recent theoretical predictions [Brocket al., Phys. Rev. Appl. 14, 054026 (2020)]. By measuring the power spectral density of these frequency fluctuations at carefully chosen points in parameter space, we find that they are primarily a result of thecharge and flux noise common in solid-state devices. Notably, we also observe key signatures of frequency fluctuations induced by quantum fluctuations in the cavity field via the Kerr nonlinearity.
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DOI:
--
发表时间:
2005
期刊:
影响因子:
--
作者:
M. Sillanpää
通讯作者:
M. Sillanpää
影响因子:
3.7
作者:
Chen, Fei;Li, Juliang;Rimberg, A. J.
通讯作者:
Rimberg, A. J.
影响因子:
1.8
作者:
S. D. de Graaf;A. Danilov;S. Kubatkin
通讯作者:
S. Kubatkin
影响因子:
4.6
作者:
Brock, B. L.;Blencowe, M. P.;Rimberg, A. J.
通讯作者:
Rimberg, A. J.
DOI:
--
发表时间:
2013
期刊:
影响因子:
--
作者:
Fei Chen
通讯作者:
Fei Chen