What is fidelity, and why does it matter in a quantum network? Fidelity is a measure of how closely the quantum state you actually have matches the state you i

What is fidelity, and why does it matter in a quantum network? Fidelity is a measure of how closely the quantum state you actually have matches the state you intended to create. In an entanglement-based network, fidelity becomes a measure of the quality of the entanglement being distributed. Noise…