4.8 Article

Reaching the ultimate energy resolution of a quantum detector

Journal

NATURE COMMUNICATIONS
Volume 11, Issue 1, Pages -

Publisher

NATURE PUBLISHING GROUP
DOI: 10.1038/s41467-019-14247-2

Keywords

-

Funding

  1. Academy of Finland [297240, 312057, 303677]
  2. European Union's Horizon 2020 research and innovation program under the European Research Council (ERC) program and Marie Sklodowska-Curie actions [742559, 766025]
  3. Swedish VR
  4. Academy of Finland (AKA) [303677, 297240, 297240, 303677] Funding Source: Academy of Finland (AKA)

Ask authors/readers for more resources

Quantum calorimetry, the thermal measurement of quanta, is a method of choice for ultrasensitive radiation detection ranging from microwaves to gamma rays. The fundamental temperature fluctuations of the calorimeter, dictated by the coupling of it to the heat bath, set the ultimate lower bound of its energy resolution. Here we reach this limit of fundamental equilibrium fluctuations of temperature in a nanoscale electron calorimeter, exchanging energy with the phonon bath at very low temperatures. The approach allows noninvasive measurement of energy transport in superconducting quantum circuits in the microwave regime with high efficiency, opening the way, for instance, to observe quantum jumps, detecting their energy to tackle central questions in quantum thermodynamics.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.8
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available