Channel Estimation with Noisy Entanglement

Details Channel Estimation with Noisy Entanglement Channel Estimation with Noisy Entanglement

2001-08-08

arxiv.org/abs/quant-ph/0108036v3

Phys. Lett. A 292, 15 (2001)

Physics

Quantum Physics

6 pages, including 4 figures

Scientific paper

10.1016/S0375-9601(01)00781-2

We analyze the Pauli-channel estimation with mixed nonseparable states. It
turns out that within a specific range entanglement can serve as a nonclassical
resource. However, this range is rather small, that is entanglement is not very
robust for this application. We further show that Werner states yield the best
result of all Bell diagonal states with the same amount of entanglement.

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