Emergence of chaos controlled by quantum noise

Jessica K. Eastman, Joseph J. Hope, André R. R. Carvalho

Published 2016-04-12Version 1

We show that the Lyapunov exponents of quantum systems under monitoring are sensitive to the choice of measurement strategy. In particular, there is a region between the deep quantum regime and the classical limit where the choice of monitoring has a crucial effect on the complex behaviour of the system, leading to either the emergence or suppression of chaos. Our work shows that this effect stems from the interplay between the underlying nonlinear dynamics and the ways the system couples to the quantum noise for different measurement scenarios.