Non-Markovian disentanglement dynamics of two-qubit system

Abstract

We investigated the disentanglement dynamics of two-qubit system in Non-Markovian approach. We showed that only the couple strength with the environment near to or less than fine-structure constant 1/137, entanglement appear exponential decay for a certain class of two-qubit entangled state. While the coupling between qubit and the environment is much larger, system always appears the sudden-death of entanglement even in the vacuum environment.

17 pages, 3 figures

References in corpus (3)

• Finite-Time Disentanglement via Spontaneous Emission
• Non-Markovian entanglement dynamics of quantum continuous variable systems in thermal environments
• Charge qubit dynamics in a double quantum dot coupled to phonons

Cited by in corpus (11)

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• Manipulating sudden death of entanglement of two-qubit X-states in thermal reservoirs
• Sudden death of distillability in qutrit-qutrit systems
• Non-Markovian entanglement dynamics between two coupled qubits in the same environment
• Decoherence of two qubits in a non-Markovian reservoir without rotating-wave approximation
• Sudden death and birth of entanglement beyond the Markovian approximation
• Relaxation times in an open interacting two-qubit system
• Division of the two-qubit Hilbert space according to the entanglement sudden death under composite noise environment
• Finite time decoherence could be suppressed efficiently in photonic crystal
• Quantum recoil effects in finite-time disentanglement of two distinguishable atoms
• Decoherence of two qubits coupled with one-mode cavity without rotating-wave approximation