Dissipation and entanglement dynamics for two interacting qubits coupled to independent reservoirs

Abstract

We derive the master equation of a system of two coupled qubits by taking into account their interaction with two independent bosonic baths. Important features of the dynamics are brought to light, such as the structure of the stationary state at general temperatures and the behaviour of the entanglement at zero temperature, showing the phenomena of sudden death and sudden birth as well as the presence of stationary entanglement for long times. The model here presented is quite versatile and can be of interest in the study of both Josephson junction architectures and cavity-QED.

14 pages, 3 figures, submitted to Journal of Physics A: Mathematical and Theoretical

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• Non-Markovian dissipative dynamics of two coupled qubits in independent reservoirs: a comparison between exact solutions and master equation approaches
• The dynamics of local quantum uncertainty and trace distance discord for two-qubit X states under decoherence: a comparative study
• Stimulated Raman adiabatic passage in an open quantum system: Master equation approach
• Non-Markovian dynamics of interacting qubit pair coupled to two independent bosonic baths
• Exact dynamics of entanglement and entropy in structured environments
• Stimulated Raman adiabatic passage in a $\Lambda$-system in the presence of quantum noise
• Quantum entanglement and disentanglement of multi-atom systems
• Robust stationary entanglement of two coupled qubits in independent environments
• Initial Conditions and Entanglement Sudden Death
• Observing different phases for the dynamics of entanglement in an ion trap
• Plasmon-assisted quantum control of distant emitters
• Dephasing-assisted entanglement in a system of strongly coupled qubits
• Quantum thermalization and vanishing thermal entanglement in the open Jaynes-Cummings model
• $GHZ$ state generation of three Josephson qubits in presence of bosonic baths
• Enhancement of non-equilibrium thermal quantum discord and entanglement of a three-spin XX chain by multi-spin interaction and external magnetic field
• Quantum thermalization and thermal entanglement in the open quantum Rabi model
• Probing multipartite entanglement, coherence and quantum information preservation under classical Ornstein-Uhlenbeck noise