Tri-partite Entanglement Witnesses and Sudden Death

Abstract

I explore entanglement dynamics in a three qubit system comparing the ability of entanglement witnesses to detect tri-partite entanglement to the phenomenon of entanglement sudden death (ESD). Using a system subject to dephasing I invoke entanglement witnesses to detect tri-partite GHZ and W-type entanglement and compare the evolution of their detection capabilites with the evolution of the negativity, bi-partite concurrence, and tri-partite negativity. Interestingly, I find a state in which there is no concurrence or tri-partite negativity but there is entanglement. Finally, I utilize a three qubit quantum error correction (QEC) code to address how ESD affects the abilities of quantum error correction.

7 pages, 4 (composite) figures, accepted PRA

References in corpus (13)

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Cited by in corpus (19)

• Genuinely Multipartite Concurrence of N-qubit X-matrices
• Time-evolution of tripartite quantum discord and entanglement under local and non-local random telegraph noise
• Quantum Correlations in non-Markovian Environments
• Quantum localized states in photonic flat-band lattices
• The dynamic behaviors of local quantum uncertainty for three-qubit X states under decoherence channels
• Analytical expression of Genuine Tripartite Quantum Discord for Symmetrical X-states
• Spin Squeezing, Negative Correlations, and Concurrence in the Quantum Kicked Top Model
• A sufficient Entanglement Criterion Based On Quantum Fisher Information and Variance
• Sudden death of entanglement in fermionic systems under collective decoherence
• Decoherence Effects in a Three-Level System under Gaussian Process
• Detection of genuine tripartite entanglement based on Bloch representation of densitymatrices
• Decoherence-free subspace and entanglement sudden death of multi-photon polarization states in fiber channels
• Estimating many properties of a quantum state via quantum reservoir processing
• Evolution of Entanglement Witness of Dicke State under Noise and Error Mitigation
• Environment engineering to protect quantum coherence in tripartite systems under dephasing noise
• Tripartite entanglement and tripartite steering in three-qubit pure states induced by vacuum--one-photon superpositions
• Dephasing-Induced Distribution of Entanglement in Tripartite Quantum Systems
• Entanglement Evolution in a Five Qubit Error Correction Code
• Robustness of Greenberger-Horne-Zeilinger and W states against Dzyaloshinshkii-Moriya interaction