Disentanglement of three-qubit states in a noisy environment

Jie Hui Huang*, Li Gang Wang, Shi Yao ZHU

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

14 Citations (Scopus)


By applying a modified conjugate gradient method in the evaluation of three-qubit residual entanglement, the disentanglement of three-qubit states in an amplitude-damping and dephasing environment is investigated numerically. It is found that the decay of tripartite entanglement is faster than bipartite entanglement in the same qubits-noise system, which indicates that multipartite entanglement is more fragile than bipartite entanglement in resisting quantum noises. Similar to the case of a two-qubit system, three-qubit entanglement subject to an open environment may also disappear abruptly (sudden death) or decrease asymptotically, which is dependent on the conditions of the initially entangled quantum state and the properties of quantum noise.

Original languageEnglish
Article number064304
JournalPhysical Review A
Issue number6
Publication statusPublished - 24 Jun 2010

Scopus Subject Areas

  • Atomic and Molecular Physics, and Optics


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