Johnson Noise Thermometry using a Quantum Voltage Noise Source for Calibration

S. Nam, S. Benz, P. Dresselhaus, W. Tew, D. White, J. Martinis
2004 2004 Conference on Precision Electromagnetic Measurements  
We describe our progress towards a high-precision measurement of temperature using Johnson noise. Using a Quantized Voltage Noise Source (QVNS) based on the Josephson effect as a calibrated noise source, we have been able to measure the gallium and water triple point temperatures with an accuracy approaching 100 ppm.
doi:10.1109/cpem.2004.305470 fatcat:7vonaqkuzjhazfdb526kqpqjde