We propose a two-dimensional spectroscopic protocol for measuring the time-dependent coherences between stationary states of system induced by system-bath interaction. also investigate role temporally correlated noise on coherence dephasing. This enables dynamical information about and its coupling to environment be determined. Our results are based quantum-trajectory method, obtained from both...

The interplay of time-delayed feedback and temporally correlated coloured noise in a single and two coupled excitable systems is studied in the framework of the FitzHugh-Nagumo (FHN) model. By using coloured noise instead of white noise, the noise correlation time is introduced as an additional time scale. We show that in a single FHN system the major time scale of oscillations is strongly infl...