改进可编程量子电流generator，提高电流测量的可追溯性
Improvements of the programmable quantum current generator for better traceability of electrical current measurements
摘要：
基于欧姆定律应用于量子电压和电阻标准的可编程量子电流发生器已经证明了从具有$10^{-8}$相对不确定性的元电荷实现安培[J. Brun-Picard等人PRX 6，041051，2016]。在这里，我们报告的设备导致产生的量化电流的噪声降低的改进。改进后的量子电流发生器可用于校准不同类型的电流表，具有较低的测量不确定度。此外，使用经校准的超稳定低噪声电流放大器（ULCA）对其量化电流进行的测量表明，在$\pm50$ $μ$ A范围内，PTB（Physikalisch-Technische Bundesanstalt）和LNE（Acadatoire national de metrologie et d 'essais）的安培实现在$10^{7}$中为-3.7份，在$10^{7}$中的组合标准不确定度为3.1份（覆盖因子$k_\mathrm{c}=1$）。
英文摘要：
A programmable quantum current generator based on the application of Ohm's law to quantum voltage and resistance standards has demonstrated a realization of the ampere from the elementary charge with a $10^{-8}$ relative uncertainty [J. Brun-Picard et al. PRX 6, 041051, 2016]. Here, we report on improvements of the device leading to a noise reduction of the generated quantized current. The improved quantum current generator is used to calibrate different ammeters with lower measurement uncertainties. Besides, measurements of its quantized current using a calibrated Ultrastable Low-Noise Current Amplifier (ULCA) have shown that the realizations of the ampere at PTB (Physikalisch-Technische Bundesanstalt) and LNE (Laboratoire national de métrologie et d'essais) in the range $\pm50$ $μ$A agreed to -3.7 parts in $10^{7}$ with a combined standard uncertainty of 3.1 parts in $10^{7}$ (coverage factor $k_\mathrm{c}=1$).
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
