Singularity of dynamical maps

S. C. Hou, X. X. Yi, S. X. Yu +1

For a dynamical map $\Lambda (t,0)$, which sends a state $\rho (0)$ of quantum open system to a state $\rho (t)=\Lambda (t,0)\rho (0)$, the decomposition law $\Lambda (t,0)=\Lambda (t,t_c)\Lambda (t_c,0)$ may break down at a sp…