Increasing singlet fraction with entanglement swapping

Details Increasing singlet fraction with entanglement swapping Increasing singlet fraction with entanglement swapping

2008-05-07

arxiv.org/abs/0805.1044v3

Phys. Rev. A 78, 032321 (2008)

Physics

Quantum Physics

5 pages, 4 figures

Scientific paper

10.1103/PhysRevA.78.032321

We consider entanglement swapping for certain mixed states. We assume that the initial states have the same singlet fraction and show that the final state can have singlet fraction greater than the initial states. We also consider two quantum teleportations and show that entanglement swapping can increase teleportation fidelity. Finally, we show how this effect can be demonstrated with linear optics.

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