Quantum scientists accurately measure power levels one trillion times lower than usual

Credit: Jean-Philippe Girard/Aalto University

Image of the power sensor on a silicon chip. The measured radiation arrives from the horizontal transmission line on the left and the power level is read out using the line of the right. The red line is used to apply a known heater power to calibrate the power reading. the inset on the right shows a zoom-in of the absorber and thermometer parts of the device.

« Quantum scientists accurately measure power levels one trillion times lower than usual

Credit: Bluefors

Inner parts of a cryogenic measurement setup at Bluefors. The developed power sensor is installed at the bottom plate of the system and can be used to measure the power of radiation coming down the shown thin cables.

« Quantum scientists accurately measure power levels one trillion times lower than usual

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