论文标题
三维Josephson参数放大器
A three-dimensional Josephson parametric amplifier
论文作者
论文摘要
约瑟夫森参数放大器（JPA）通过将嵌入在二维谐振器中的超导量量子干扰装置（squid）耦合到三维（3D）微波腔中执行。通过将AC磁通量（3D腔频率）注入鱿鱼，以三波混合构型激活JPA。 8.3 GHz腔以非脱位相位不敏感的构型测量，该构型的增益超过40 dB，其中20 dB增益导致操作带宽为0.4 MHz，1 dB的压缩点为-115 dbm，并具有一半量的添加噪声。
A Josephson parametric amplifier (JPA) is executed in a three-dimensional (3D) microwave cavity by coupling it to a superconducting quantum interference device (SQUID) that is embedded in a two-dimensional resonator. The JPA is activated in a three-wave mixing configuration by injecting ac magnetic flux, at twice the 3D cavity frequency, into the SQUID. An 8.3 GHz cavity is measured in a non-degenerate phase-insensitive configuration which yields gains in excess of 40 dB, where a 20 dB gain results in an operational bandwidth of 0.4 MHz, a 1 dB compression point of -115 dBm with half a quantum of added noise.
