Improved performance of the ECCS experiment at PTB

Recent improvements on the ECCS experiment at PTB are reported. A 5-junction single-electron R-pump is shown to shuttle electrons with a relative transfer error of 5×10-8. Moreover, the relative uncertainty of the setup for the cryogenic capacitor voltage measurement has been reduced to urel <; 10-9. Further perspectives related to data evaluation and analysis on the ECCS experiment is also discussed.

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