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← ScienceWhich security risk increases when entanglement-based quantum key distribution has phase drift?
A)Increased side-channel information leakage✓
B)Photodetector efficiency quickly decreases
C)Qubit decoherence accelerates significantly
D)Communication range instantly drops tenfold
💡 Explanation
Side-channel leakage rises because phase drift in the photonic signal produces timing correlations, allowing adversaries deconstruct the encryption; entangled photons provide less security because of compromised key generation, therefore timing attacks prevail, rather than qubit decoherence hindering direct reading.
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