Evolution equation of entanglement for multi-qubit systems

Abstract

We discuss entanglement evolution of a multi-qubit system when one of its qubits is subjected to a general noisy channel. For such a system, an evolution equation of entanglement for a lower bound for multi-qubit concurrence is derived. Using this evolution equation, the entanglement dynamics of an initially mixed three-qubit state composed of a GHZ and a W state is analyzed if one of the qubits is affected by a phase, an amplitude or a generalized amplitude damping channel.

3 figures, 28 references

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Cited by in corpus (8)

• Time-evolution of tripartite quantum discord and entanglement under local and non-local random telegraph noise
• Defeating entanglement sudden death by a single local filtering
• Evolution of tripartite entangled states in a decohering environment and their experimental protection using dynamical decoupling
• Entangled Network and Quantum Communication
• Entanglement dynamics of three-qubit states in many-sided noisy channels
• Dynamics of Entanglement and Nonclassical Correlation for Four-Qubit GHZ State
• Dynamics of quantum entanglement in the reservoir with memory effects
• Symmetries of Multipartite Entanglement Evolution in Many-Sided Local Channels