Kunli Zhou
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View article: A 300 mV Josephson Arbitrary Waveform Synthesizer Chip at NIM
A 300 mV Josephson Arbitrary Waveform Synthesizer Chip at NIM Open
This paper describes the status of developing Josephson arbitrary waveform synthesizer (JAWS) chips at NIM (National Institute of Metrology, China). To obtain high junction integration density and fewer data input channels, the chip employ…
View article: Self-Calibration Method for Accurate Direct-Current Ratio Calibration
Self-Calibration Method for Accurate Direct-Current Ratio Calibration Open
A self-calibration method is proposed for determining the current ratio for DC current ratio devices. To demonstrate the feasibility of the proposal, an experimental test with nominal current ratios of 10:1 100:1 and 1000:1 is performed, a…
View article: Simulation Analysis of Phase Jitter in Differential Sampling of AC Waveforms Based on the Programmable Josephson Voltage Standard
Simulation Analysis of Phase Jitter in Differential Sampling of AC Waveforms Based on the Programmable Josephson Voltage Standard Open
The effect of phase jitter on differential sampling using the programmable Josephson voltage standard (PJVS) system is studied in this paper. A phase jitter model is established for the measured signal, and compensation coefficients for ph…
View article: Differential Sampling of AC Waveforms Based on a Commercial Digital-to-Analog Converter for Reference
Differential Sampling of AC Waveforms Based on a Commercial Digital-to-Analog Converter for Reference Open
This paper introduces an innovative differential sampling technique for calibrating AC waveforms, leveraging a commercially available 16-bit digital-to-analog converter (DAC) as the reference standard. The novelty of this approach lies in …
View article: Endoplasmic Reticulum Stress-Induced Autophagy Determines the Susceptibility of Melanoma Cells to Dabrafenib [Retraction]
Endoplasmic Reticulum Stress-Induced Autophagy Determines the Susceptibility of Melanoma Cells to Dabrafenib [Retraction] Open
[This retracts the article DOI: 10.2147/DDDT.S112740.].
View article: Microwave Synthesizer and Self-Adaption System for High Performance Coherent Population Trapping Atomic Clocks
Microwave Synthesizer and Self-Adaption System for High Performance Coherent Population Trapping Atomic Clocks Open
A microwave (MW) synthesizer is a key component of high-performance coherent population trapping (CPT) atomic clocks, which are competitive candidates as miniature, low-power-consumption atomic clocks. In this work, we demonstrated a micro…
View article: Fabrication and Characterization of a Quantum Voltage Noise Source Chip for a Johnson Noise Thermometer
Fabrication and Characterization of a Quantum Voltage Noise Source Chip for a Johnson Noise Thermometer Open
A Johnson noise thermometer (JNT) determines the thermodynamic temperature through cross-correlation measurement of the Johnson noise in a sense resistor at an unknown temperature. In the quantum voltage calibrated JNT system, a supercondu…
View article: Johnson noise thermometry
Johnson noise thermometry Open
Johnson noise thermometers infer thermodynamic temperature from measurements of the thermally-induced current fluctuations that occur in all electrical conductors. This paper reviews the status of Johnson noise thermometry and its prospect…
View article: An improved electronic determination of the Boltzmann constant by Johnson noise thermometry
An improved electronic determination of the Boltzmann constant by Johnson noise thermometry Open
Recent measurements using acoustic gas thermometry have determined the value of the Boltzmann constant, k, with a relative uncertainty less than 1 × 10-6. These results have been supported by a measurement with a relative uncertainty of 1.…