2015/09/01 by P. Espoukeh, Pakhshan Espoukeh, R. Rahimi +4
Computer Science · Mathematics · Physics and Astronomy · #Computer science #Correlation #Dynamics (music) #Greenberger–Horne–Zeilinger state #Mathematics #Physics #Quantum #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum channel #Quantum correlation #Quantum discord #Quantum entanglement #Quantum mechanics #Quantum teleportation #Qubit #State (computer science) #Statistical physics #W state #quant-ph
paper · pdf · doi:10.1142/s0219749915500446
published as Int. J. Quantum Inform. 13, 1550044 (2015) · 15 pages, 2 figures, to appear in International Journal of Quantum Information
openalex publication_date 2015/09/01 · arxiv created 2015/09/21 · arxiv updated 2015/12/08 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Many-qubit entanglement is crucial for quantum information processing although its exploitation is hindered by the detrimental effects of the environment surrounding the many-qubit system. It is thus of importance to study the dynamics of general multipartite non-classical correlation, including but not restricted to entanglement, under noise. We did this study for four-qubit Greenberger–Horne–Zeilinga (GHZ) state under most common noises in an experiment and found that non-classical correlation is more robust than entanglement except when it is imposed to dephasing channel. Quantum discord presents a sudden transition in its dynamics for Pauli-X and Pauli-Y noises as well as Bell-diagonal states interacting with dephasing reservoirs and it decays monotonically for Pauli-Z and isotropic noises.