Title :
Steps Towards a Capacitance Standard Based on Single-Electron Counting at PTB
Author :
Scherer, H. ; Lotkhov, S.V. ; Willenberg, G.D. ; Zorin, A.B.
Author_Institution :
Phys.-Technische Bundesanstalt Braunschweig Bundesallee
Abstract :
A quantum standard for capacitance is realized by charging a capacitor with a well-known number of electrons and measuring the voltage U across the capacitor by means of a Josephson voltage standard (Williams et al., 1992), This experiment yields quantum determination for the capacitance C = Ne/U where N is the number of electrons and e the elementary charge. Currently, PTB is working on the realization of such an experiment using single-electron pumps for transferring electrons one by one to a cryogenic vacuum capacitor. We report on the progress in the development of the different components for this experiment, with emphasis on measurements characterizing the single-electron tunneling (SET) circuit
Keywords :
capacitance measurement; capacitors; measurement standards; quantum theory; single electron devices; voltage measurement; Josephson voltage standard; PTB; capacitance; cryogenic vacuum capacitor; quantum determination; quantum standard; single-electron pumps; single-electron tunneling circuit; Capacitance measurement; Capacitors; Charge measurement; Cryogenics; Current measurement; Electrons; Measurement standards; Quantum capacitance; Tunneling; Voltage measurement;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 2004 Conference on
Conference_Location :
London
Print_ISBN :
0-7803-8494-6
Electronic_ISBN :
0-7803-8494-6
DOI :
10.1109/CPEM.2004.305588
