N. Flowers-Jacobs, A. Rüfenacht, A. Fox, S. Waltman, R. Schwall, J. Brevik, P. Dresselhaus, S. Benz
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引用次数: 6
摘要
我们最近创建了一个4 V rms的冷冻JAWS(约瑟夫森任意波形合成器)，使用204,960个几乎相同的约瑟夫森结(js)嵌入在共面波导中。JJs以每秒16×109脉冲的重复速率进行脉冲偏置，以在直流到大于1mhz的频率范围内创建量子精确的、可计算的交流波形。该系统具有计量应用，包括精密交流电压校准、任意阻抗比较和交流功率测量。
Development and Applications of a Four-Volt Josephson Arbitrary Waveform Synthesizer
We have recently created a 4 V rms cryocooled JAWS (Josephson Arbitrary Waveform Synthesizer) using 204,960 nearly identical Josephson junctions (JJs) that are embedded in coplanar-wave guides. The JJs are pulse-biased at repetition rates up to 16×109 pulses per second to create quantum-accurate, calculable AC waveforms at frequencies from DC to greater than 1 MHz. This system has metrological applications including in precision ac voltage calibrations, comparisons of arbitrary impedances, and ac power measurements.
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