Author(s): T. B. Batalhão, A. M. Souza, R. S. Sarthour, I. S. Oliveira, M. Paternostro, E. Lutz, and R. M. Serra
Entropy production, a quantity associated with the emergence of the arrow of time, has been successfully measured in a microscopic quantum system.

[Phys. Rev. Lett. 115, 190601] Published Mon Nov 02, 2015