Applications of Programmable Josephson Voltage Standard for AC Voltage Metrology

  • AMAGAI Yasutaka
    Research Institute for Physical Measurement, National Institute of Advanced Industrial Science and Technology (AIST)
  • MARUYAMA Michitaka
    Research Institute for Physical Measurement, National Institute of Advanced Industrial Science and Technology (AIST)
  • YAMAMORI Hirotake
    Nanoelectronics Research Institute, National Institute of Advanced Industrial Science and Technology (AIST)
  • SHIMAZAKI Takeshi
    Research Institute for Physical Measurement, National Institute of Advanced Industrial Science and Technology (AIST)
  • OKAWA Kenjiro
    Research Institute for Physical Measurement, National Institute of Advanced Industrial Science and Technology (AIST)
  • FUJIKI Hiroyuki
    Research Institute for Physical Measurement, National Institute of Advanced Industrial Science and Technology (AIST)
  • KANEKO Nobu-Hisa
    Research Institute for Physical Measurement, National Institute of Advanced Industrial Science and Technology (AIST)

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Other Title
  • プログラマブル型ジョセフソン電圧標準の交流応用
  • プログラマブルガタ ジョセフソン デンアツ ヒョウジュン ノ コウリュウ オウヨウ

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Abstract

<p>Over the last half-century, the most fundamental measurement of AC voltage has been done by comparing the Joule heating of an unknown AC signal to that of a reference direct DC voltage using thermal voltage converters (TVCs). However, the accuracy of AC-DC difference measurements of the TVC is limited by the accuracy of the model describing the AC-DC difference of the reference TVC. To satisfy the requirements for improved AC voltage metrology, national metrology institutes are developing quantum standards based upon the Josephson effect. These quantum-based AC voltage standards have significant advantages over a conventional measurement method in terms of accuracy and versatility. This article reviews the fundamental principle of AC voltage measurements with a conventional method based on a TVC and application of the AC-programmable Josephson voltage standard system using a sampling technique for the measurement of the AC-DC difference at low frequency.</p>

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