Realization of a 2-V Programmable Josephson Junction Array Using Balanced Segmentation Scheme

Cao, Wenhui; Li, Jinjin; Zhong, Yuan; Zhong, Qing; Xu, Da; Wang, Xueshen; Xu, Xiaolong

doi:10.1109/tasc.2022.3216605

Cited by 2 publications

(1 citation statement)

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“…Conventional probe-inserted programmable Josephson voltage standards have advantages, such as faster temperature raising or lowering than cryocooler systems, good temperature stability, and low system noise. However, these devices typically do not offer temperature measurements, which makes it di cult to determine whether the device's temperature exceeds the superconducting transition temperature during the warming process [26][27][28][29][30]. When a sample experiences trapped magnetic ux, the sample probe needs to be pulled a su cient distance out of the dewar, increasing the device temperature well above the superconducting transition temperature to remove the ux.…”

Section: Introductionmentioning

confidence: 99%

A Voltage Monitoring Approach for Eliminating Flux Trapping in Josephson Junction Arrays

Qiao,

Cao,

et al. 2024

Preprint

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Based on the characteristic change in resistance of superconducting devices during the superconducting transition, a quantitative method to determine the temperature of superconducting devices has been proposed. This method can detect in real time whether the temperature of the superconducting device exceeds the superconducting transition temperature, thereby enabling quick elimination of the trapped magnetic flux in devices. We apply this method in our experiment, which uses a superconducting 22 subarrays programmable Josephson voltage standard (PJVS) device and obtains satisfactory results. We conclude that this method can efficiently eliminate the tapped magnetic flux in superconducting device testing systems that do not possess thermometers and facilitate testing.

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Section: Introductionmentioning

confidence: 99%