Robustness of multiparticle entanglement: specific entanglement classes and random states

Abstract

We investigate the robustness of genuine multiparticle entanglement under decoherence. We consider different kinds of entangled three- and four-qubit states as well as random pure states. For amplitude damping noise, we find that the W-type states are most robust, while other states are not more robust than generic states. For phase damping noise the GHZ state is the most robust state, and for depolarizing noise several states are significantly more robust than random states.

12 pages, 5 figures, v2: small changes

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• Sudden change in dynamics of genuine multipartite entanglement of cavity-reservoir qubits
• Randomized Graph States and their Entanglement Properties
• Qubit-Qutrit ($2\otimes 3$) quantum systems: An investigation of some quantum correlations under collective dephasing
• Dynamics of Entanglement and Nonclassical Correlation for Four-Qubit GHZ State
• Localizing genuine multiparty entanglement in noisy stabilizer states
• Genuine entanglement under squeezed generalized amplitude damping channels with memory
• Evolution of Entanglement Witness of Dicke State under Noise and Error Mitigation
• Sudden change of genuine multipartite entanglement in non-Markovian dynamics