论文标题
由Ybacuo Josephson结阵阵列制成的通量流振荡器产生的电磁波的参数扩增
Parametric amplification of electromagnetic waves produced by a flux-flow-oscillator made of YBaCuO Josephson junction arrays
论文作者
论文摘要
我们观察到由由YBA2CU3O7制成的通量流振荡器产生的电磁（EM）波的参数扩增，该振荡器在泵频率fp = 45 GHz的情况下与毫米波Fabry-Perot resonator的谐振模式相连的Josephson连接阵列阵列。对于在范围内的温度（30-45）k，要扩增的EM信号的频率Fs可以通过具有单频量子 - Quantum Pricesicities的应用B场诱导的通量在范围内（1-25）GHz连续调节。因此，我们测量了一个显着的参数增益，该增益几乎是频率无关的，最大（8-10.4）DB达到40K。对于温度（14-30）k，FS的磁场可调性逐渐抑制至（1-5）GHz范围的最小值，其中测量了（5-6）dB之间的参数增益。通过适当调整设计/制造参数，我们的结果表明，可调MW发电机/探测器的发展以及由高过渡温度超导体制成的参数放大器，并且在广泛的温度（10 MK-77K）中运行是合理且吸引人的可能性。
We observe parametric amplification of electromagnetic (EM) waves produced by a flux-flow oscillator made of YBa2Cu3O7 Josephson junctions arrays coupled to the resonant modes of a millimeter wave Fabry-Perot resonator at a pump frequency fP=45 GHz. For temperatures in the range (30-45) K the frequency fS of the EM signal to be amplified could be tuned continuously in the range (1-25) GHz by an applied B-field induced flux with a one-flux-quantum periodicity. Consequently, we measured a significant parametric gain that is almost frequency independent, with a maximum of (8-10.4) dB reached at 40K. For temperatures in the range (14-30) K the magnetic field tunability of fS is gradually suppressed to a minimum of (1-5) GHz range where a parametric gain between (5-6) dB was measured. With an appropriate adjustment of design/fabrication parameters our results suggests that the development of tunable MW generators/detectors, as well as parametric amplifiers made of high transition temperature superconductors and operating in a wide range of temperatures (10 mK-77K) is a reasonable and appealing possibility.
