Probing multipartite entanglement, coherence and quantum information preservation under classical Ornstein–Uhlenbeck noise

Abstract We address entanglement, coherence, and information protection in a system of four non-interacting qubits coupled with different classical environments, namely: common, bipartite, tripartite, independent environments described by Ornstein–Uhlenbeck (ORU) noise. show that quantum preserved the qubit state is more dependent on coherence than entanglement using time-dependent witness, purity, Shannon entropy. find these two phenomena directly interrelated highly vulnerable ORU noise, resulting pure exponential decay considerable amount. The current Markovian dynamical map, as well suppression fluctuating character are observed to be entirely attributable Gaussian nature increasing number witnessed speed up amount decay. Unlike other noises, noise parameter’s flexible range readily exploitable, ensuring long enough memory properties. four-qubit GHZ state, besides having large storage potential, stands partially entangled coherent common for an indefinite duration. In addition, we derive computational values each system-environment interaction, which will help practitioners optimize related environments.