Experimental realization of the quantum metrological triangle experiment

被引：1
|
作者：
Chenaud, B. [1 ]
Devoille, L. [1 ]
Steck, B. [1 ]
Feltin, N. [1 ]
Gonzalez-Cano, A. [1 ]
Poirier, W. [1 ]
Schopfer, F. [1 ]
Spengler, G. [1 ]
Djordjevic, S. [1 ]
Seron, O. [1 ]
Piquemal, F. [1 ]
Lotkhov, S. [2 ]
机构：
[1] Lab Natl Metrol & Essais LNE, Trappes, France
[2] Phys Tech Bundesanstalt, Braunschweig, Germany
来源：
25TH INTERNATIONAL CONFERENCE ON LOW TEMPERATURE PHYSICS (LT25), PART 2 | 2009年 / 150卷
关键词：
D O I：
10.1088/1742-6596/150/2/022008
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The quantum metrological triangle experiment (QMTE) consists in realizing Ohm's law with Josephson (JE), quantum Hall (QHE) and single electron tunneling (SET) effects. The aim is to check the consistency of the link among the phenomenological constants K-J, R-K and Q(X) involved in these effects and theoretically expressed with the fundamental constants e and h. Such an experiment could be a contribution for a new definition of the systeme international d'unites (SI) base units. In the QMTE, a current generated by a SET device flows through a resistor calibrated against QHE standard and the voltage induced at its terminals is compared to the metrological voltage generated by a Josephson junctions array. At LNE, the studied SET devices are 3 junctions single electron pumps with on chip resistors. The quantized current generated by this pump is theoretically equal to ef (f is the frequency of the driving signals applied on the gates) and is measured through a cryogenic current comparator (CCC), which allows to amplify the low pumping current with a metrological accuracy. We will present and discuss the experimental set-up developed at LNE and the first results. In addition to the main aim of QMTE described above, these preliminary results are also a first step towards a determination of e.
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页数：4
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