Timing Jitter Measurement in Single-Flux-Quantum Circuits Based on Time-to-Digital Converters With High Time-Resolution
Timing Jitter Measurement in Single-Flux-Quantum Circuits Based on Time-to-Digital Converters With High Time-Resolution
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基于高时间分辨率时间数字转换器的单通量量子电路中的定时抖动测量
DOI：
10.1109/tasc.2007.898560
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发表时间：
2007
影响因子：
1.8
通讯作者：
A. Fujimaki
中科院分区：
文献类型：
--
作者：
M. Terabe;A. Sekiya;T. Yamada;A. Fujimaki
我们基于具有亚皮秒时间分辨率的时间-数字转换器（TDC）评估时序抖动。用NEC标准工艺制作的传统约瑟夫森传输线的最佳阻尼简单结在液氦温度下的测量抖动为65 fs。抖动的温度依赖性和并联电阻依赖性表明，抖动来源于结的并联电阻处产生的热噪声。我们还发现，平衡比较器的定时抖动比JTL大得多。平衡比较器的抖动与温度无关。这意味着平衡比较器的抖动不会由热噪声引起。
We evaluated timing jitter based on a time-to-digital converter (TDC) having sub-pico seconds time resolution. The measured jitter at liquid helium temperature was 65 fs for an optimally damped simple junction composing a conventional Josephson transmission line fabricated with the NEC standard process. The temperature dependence and shunt resistance dependence of jitter indicate that the jitter originates from thermal noise generated at the shunt resistor of the junction. We also found that the timing jitter of a balanced comparator is much larger than that of a JTL. The jitter of a balanced comparator is independent of temperature. This means that the jitter of a balanced comparator does not arise from thermal noise.