论文标题
微带动力学运动波动参数放大器中的四波混合
Four wave-mixing in a microstrip kinetic inductance travelling wave parametric amplifier
论文作者
论文摘要
超导量子电路通常在低温（MK）下运行，需要低温低噪声，宽带放大器，以最终与室温电子设备兼容。尽管现有的实现部分符合这些标准，但它们遭受了一定的局限性，例如波纹传输光谱或有限的动态范围，其中一些是由于缺乏适当的阻抗匹配而引起的。我们开发了微带动力学运动波动波放大器（Mi-Kitwa），利用了钨硅化钨的非线性动力学电感，以使信号和泵的波混合，并且工程师的阻碍降至50Ω$，同时降低了相位的速度，并降低了相位的效率，并受益于恢复良好。尽管损失损失，但在2 GHz带宽上泵送我们的设备仍将信号放大15 dB。
Superconducting quantum circuits are typically operated at low temperatures (mK), necessitating cryogenic low-noise, wide-band amplifiers for signal readout ultimately also compatible with room temperature electronics. While existing implementations partly meet these criteria, they suffer from certain limitations, such as rippled transmission spectra or limited dynamic range, some of which are caused by the lack of proper impedance matching. We develop a MIcrostrip Kinetic Inductance Travelling Wave Amplifier (MI-KITWA), exploiting the nonlinear kinetic inductance of tungsten-silicide for wave-mixing of the signal and a pump, and engineer the impedance to $50 Ω$, while decreasing the phase velocity, with benefit for the amplification. Despite losses, pumping on our device amplifies the signal by 15 dB over a 2 GHz bandwidth.
