Steps Towards a Capacitance Standard Based on Single-Electron Counting at PTB

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 wh...

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Bibliographic Details
Main Authors: Scherer, H., Lotkhov, S.V., Willenberg, G.D., Zorin, A.B.
Format: Conference Proceeding
Language:English
Subjects:
Capacitance measurement
Capacitors
Charge measurement
Cryogenics
Current measurement
Electrons
Measurement standards
Quantum capacitance
Tunneling
Voltage measurement
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Summary: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
DOI:10.1109/CPEM.2004.305588