Symmetries and Conservation Laws in Quantum Trajectories: Dissipative Freezing.

@article{Muoz2019SymmetriesAC,
title={Symmetries and Conservation Laws in Quantum Trajectories: Dissipative Freezing.},
author={C. Mu{\~n}oz and B. Bu{\vc}a and J. Tindall and A. Gonz'alez-Tudela and D. Jaksch and D. Porras},
journal={arXiv: Quantum Physics},
year={2019}
}

In driven-dissipative systems, the presence of a strong symmetry guarantees the existence of several steady states belonging to different symmetry sectors. Here we show that, when a system with a strong symmetry is initialized in a quantum superposition involving several of these sectors, each individual stochastic trajectory will randomly select a single one of them and remain there for the rest of the evolution. Since a strong symmetry implies a conservation law for the corresponding symmetry… CONTINUE READING