Robustness of Highly Entangled Multi-Qubit States Under Decoherence
arXiv:0806.0779 · doi:10.1103/PhysRevA.79.022108
Abstract
We investigate the decay of entanglement, due to decoherence, of multi-qubit systems that are initially prepared in highly (in some cases maximally) entangled states. We assume that during the decoherence processes each qubit of the system interacts with its own, independent environment. We determine, for systems with a small number of qubits and for various decoherence channels, the initial states exhibiting the most robust entanglement. We also consider a restricted version of this robustness optimization problem, only involving states equivalent under local unitary transformations to the |GHZ> state.
16 pages, 3 figures. Changes in Sec. 3
References in corpus (9)
- Finite-Time Disentanglement via Spontaneous Emission
- Experimental investigation of the dynamics of entanglement: Sudden death, complementarity, and continuous monitoring of the environment
- Scaling laws for the decay of multiqubit entanglement
- Maximally multipartite entangled states
- Multi-Qubit Systems: Highly Entangled States and Entanglement Distribution
- Multiparticle entanglement under the influence of decoherence
- On maximal entanglement between two pairs in four-qubit pure states
- Robustness of multi-qubit entanglement in the independent decoherence model
- Some Entanglement Features of Highly Entangled Multiqubit States