Zeptojoule calorimetry

András Márton Gunyhó1, Kassius Kohvakka1, Qi-Ming Chen1

  • 1QCD Laboratories, QTF Centre of Excellence, Department of Applied Physics, Aalto University, Espoo, Finland.

Nature Electronics
|July 1, 2026
PubMed
Summary

This study demonstrates zeptojoule calorimetry using a metallic superconductor-normal-conductor-superconductor sensor. This breakthrough enables precise energy measurement of microwave pulses, paving the way for single-photon detection.

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