The scientists used tools from quantum photonics to create a Maxwell’s Demon which sorts hot correlated photons from cold ones. Due to these correlations when the Demon measures one photon it also gains information about unmeasured photons. It can convert this information into additional work. The results of the experiment were published in the current issue of Quantum.
For more information see:
Guilherme L. Zanin, Michael Antesberger, Maxime J. Jacquet, Paulo H. Souto Ribeiro, Lee A. Rozema, Philip Walther
Enhanced Photonic Maxwell's Demon with Correlated Baths
This project has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No 801110.
ESQ has received funding from the Austrian Federal Ministry of Education, Science and Research (BMBWF).