Kurt, Arzu2023-05-182023-05-182021Kurt, A. (2021). Two-time correlation functions beyond quantum regression theorem: effect of external noise. Quantum Information Processing, 20(7), 238.1570-07551573-1332http://dx.doi.org/10.1007/s11128-021-03153-6https://hdl.handle.net/20.500.12491/10912We present the results of a study of the two-time correlation functions of a dichotomously driven two-level system in contact with a thermal bath by using corrections beyond the quantum regression theorem. In the strong system-environment coupling regime, it is found that the noise parameters could be tuned to control the magnitude of corrections at low environmental temperatures. Motional averaging and narrowing effect of the external noise were observed on the absorption and emission spectra of the two-state system. Furthermore, effects similar to the destruction of tunneling and noise enhancement of transport are observed in the dynamics of the two-time correlations.eninfo:eu-repo/semantics/openAccessQuantum Regression TheoremTelegraph NoiseNon-Markovian DynamicsDrivenDecoherenceSystemsArticle10.1007/s11128-021-03153-62071172-s2.0-85109965193Q2WOS:000691582500003Q2