Allan-Deviation Measurements of Gate-Tunable Single Electron Pumps with the Ultrastable Low-Noise Current Amplifier

We characterized KRISS precision measurement system by measuring the Allan deviation of the quantized current generated by GaAsl AIGaAs gate-tunable electron pumps, where the current was amplified by the ultrastable low-nose current amplifier (ULCA) developed by the PTB. The Allan deviation of a pho...

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Bibliographic Details
Main Authors: Bae, Myung-Ho, Ahn, Ye-Hwan, Hong, Changki, Chung, Yunchul, Chae, Dong-Hun, Kim, Mun-Seog, Kim, Wan-Seop, Kim, Nam
Format: Conference Proceeding
Language:English
Subjects:
Coaxial cables
Cryogenics
Current measurement
Logic gates
measurement techniques
measurement uncertainty
precision measurements
White noise
Wires
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Summary:We characterized KRISS precision measurement system by measuring the Allan deviation of the quantized current generated by GaAsl AIGaAs gate-tunable electron pumps, where the current was amplified by the ultrastable low-nose current amplifier (ULCA) developed by the PTB. The Allan deviation of a phosphor bronze wire generally used at cryogenic temperature showed a white noise level of about 18 fA Hz-1I2. The noise level of the electron pump was improved by a factor 4 with a specific choice of cryogenic cables.
ISSN:2160-0171
DOI:10.1109/CPEM.2018.8500868