Multi-channel Precision Bias Source for Experiments on Quantum dots

yumei tang; kefu liu; haixing sun

doi:10.20944/preprints202107.0458.v2

Preprint Article Version 2 Preserved in Portico This version is not peer-reviewed

Version 1 : Received: 20 July 2021 / Approved: 20 July 2021 / Online: 20 July 2021 (15:29:52 CEST)
Version 2 : Received: 6 August 2021 / Approved: 9 August 2021 / Online: 9 August 2021 (18:17:09 CEST)

To realize precise control of the quantum dots (Qdots) device, multi-channel precision bias source plays the key role. In this paper, the 16-channel high precision bias source with 18-bit resolution for Qdots device was designed. The prototype was made and its performance was tested. The short time fluctuations can reach 50μV. The step response time is less than 3μs. The resolution, stability, linearity and dynamic range of the bias source exhibits good performance. What's more, the bias source can be controlled locally and online. The results show that it is one effective and feasible topology for experiments in Qdots device application.

quantum dots; bias source; multi-channel; high precision

Engineering, Electrical and Electronic Engineering

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Multi-channel Precision Bias Source for Experiments on Quantum dots

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