Cryogenic Current Comparators for the Realisation of Electrical Quantum Standards

被引:1
|
作者
Williams, J. M. [1 ]
机构
[1] Natl Phys Lab, Teddington TW11 0LW, Middx, England
来源
关键词
Current comparator; SQUID; Josephson; Quantum Hall; Electron pump; QUANTIZED HALL RESISTANCE; RATIO BRIDGE; OHM; JOSEPHSON; 1-OMEGA; TERMS;
D O I
10.1007/s12647-013-0087-4
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
The cryogenic current comparator has played a central role in the realisation of electrical quantum standards over the last 40 years. It is the method of choice for National Measurement Laboratories in realising a quantum Hall effect primary standard of resistance. Single electron transport devices are expected to provide a primary standard of current within the next few years and this paper considers how they will be integrated into electrical metrology.
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页码:335 / 340
页数:6
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