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Towards Cryogenic Quartz Oscillators: Coupling of a Bulk Acoustic Wave quartz resonator to a SQUID

机译:面向低温石英振荡器:大体积声波石英谐振器与SQUID的耦合

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A system consisting of a SQUID amplifier coupled to a Bulk Acoustic Wave resonator is investigated experimentally from the small to large signal regimes. Both parallel and series connection topologies of the system are verified. The study reveals significant non-Duffing response that is associated with the nonlinear characteristics of Josephson junctions. The nonlinearity provides quasi-periodic structure of the spectrum in both incident power and frequency. The result gives an insight into the open loop behaviour of a future Cryogenic Quartz Oscillator operating with a SQUID amplifier as the active device.
机译:从小到大信号状态,通过实验研究了一个由耦合到体声波谐振器的SQUID放大器组成的系统。验证了系统的并联和串联连接拓扑。该研究揭示了与约瑟夫森结的非线性特征有关的显着的非达芬响应。非线性在入射功率和频率上都提供了频谱的准周期结构。结果提供了对使用SQUID放大器作为有源器件工作的未来低温石英振荡器的开环行为的了解。

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