Microstrip filters for measurement and control of superconducting qubits.
Microstrip filters for measurement and control of superconducting qubits.
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用于测量和控制超导量子位的微带滤波器。
DOI：
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发表时间：
2013
影响因子：
1.6
通讯作者：
J. Lukens
中科院分区：
文献类型：
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作者：
L. Longobardi;D. Bennett;V. Patel;Wei Chen;J. Lukens
仔细的滤波对于在低温下观察超导电路中的量子现象是必要的。量子态之间的相干性的测量需要广泛的滤波，以防止来自室温电子器件的噪声耦合。我们展示了分布式传输线滤波器，它在GHz频率下以指数方式截止，并且可以锚定在稀释冰箱的基准温度下。紧凑的设计使它们适合在相同的设置中过滤许多不同的偏置线，这是控制和测量超导量子比特所必需的。
Careful filtering is necessary for observations of quantum phenomena in superconducting circuits at low temperatures. Measurements of coherence between quantum states require extensive filtering to protect against noise coupled from room temperature electronics. We demonstrate distributed transmission line filters which cut off exponentially at GHz frequencies and can be anchored at the base temperature of a dilution refrigerator. The compact design makes them suitable to filter many different bias lines in the same setup, necessary for the control and measurement of superconducting qubits.