Example Concept: Quantum entanglement provides the necessary correlation between qubits that allows for the transfer of quantum states in teleportation protocols. The fidelity of teleportation depends on the purity and strength of the entangled state shared between the sender and receiver. Imperfections in entanglement, such as decoherence or noise, reduce the fidelity by introducing errors in the transmitted quantum state. High-fidelity teleportation is achieved by maximizing entanglement purity and minimizing decoherence.