Which consequence results when two entangled photons are used for quantum key distribution suffer decoherence channels?

💡 Explanation

When entangled photons go through dispersive channels, decoherence occurs because interaction with the environment diminishes the quantum correlations resulting in compromised entanglement fidelity, which manifest as errors in QKD. Therefore increased error rates arise, rather than improved security, throughput, or reduced complexity which entanglement would normally offer in ideal conditions.

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