Enhanced Estimation of a Noisy Quantum Channel Using Entanglement
arXiv:quant-ph/0103160 · doi:10.1103/PhysRevA.64.022309
Abstract
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.
4 pages, 2 figures
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