Enhanced Estimation of a Noisy Quantum Channel Using Entanglement

Details Enhanced Estimation of a Noisy Quantum Channel Using Entanglement Enhanced Estimation of a Noisy Quantum Channel Using Entanglement

2001-03-29

arxiv.org/abs/quant-ph/0103160v1

Physics

Quantum Physics

4 pages, 2 figures

Scientific paper

10.1103/PhysRevA.64.022309

We discuss the estimation of channel parameters for a noisy quantum channel -
the so-called Pauli channel - using finite resources. It turns out that prior
entanglement considerably enhances the fidelity of the estimation when we
compare it to an estimation scheme based on separable quantum states.

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