Quantum Entanglement: Separability, Measure, Fidelity of Teleportation and Distillation

Details Quantum Entanglement: Separability, Measure, Fidelity of Teleportation and Distillation Quantum Entanglement: Separability, Measure, Fidelity of Teleportation and Distillation

2010-12-21

arxiv.org/abs/1012.4706v1

Advances in Mathematical Physics, Vol. 2010, 301072

Physics

Quantum Physics

63 pages, 4 figures

Scientific paper

10.1155/2010/301072

Quantum entanglement plays crucial roles in quantum information processing. Quantum entangled states have become the key ingredient in the rapidly expanding field of quantum information science. Although the nonclassical nature of entanglement has been recognized for many years, considerable efforts have been taken to understand and characterize its properties recently. In this review, we introduce some recent results in the theory of quantum entanglement. In particular separability criteria based on the Bloch representation, covariance matrix, normal form and entanglement witness; lower bounds, subadditivity property of concurrence and tangle; fully entangled fraction related to the optimal fidelity of quantum teleportation and entanglement distillation will be discussed in detail.

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