Sudden change in dynamics of genuine multipartite entanglement of cavity-reservoir qubits

Abstract

We study the dynamics of genuine multipartite entanglement for a system of four qubits. Using a computable entanglement monotone for multipartite systems, we investigate the as yet unexplored aspects of a cavity-reservoir system of qubits. For one specific initial state, we observe a sudden transition in the dynamics of genuine entanglement for the four qubits. This sudden change occurs only during a time window where neither cavity-cavity qubits nor reservoir-reservoir qubits are entangled. We show that this sudden change in dynamics of this specific state is extremely sensitive to white noise.

18 pages, 11 figures

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• Qubit-Qutrit ($2\otimes 3$) quantum systems: An investigation of some quantum correlations under collective dephasing
• Dynamics of a multipartite hybrid quantum system with beamsplitter, dipole-dipole, and Ising interactions
• Generation and transfer of entangled states between two connected microtoroidal cavities: analysis of different types of coupling
• Dynamics of local quantum uncertainty among cavity-reservoir qubits
• Sudden change of genuine multipartite entanglement in non-Markovian dynamics