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← ScienceWhich consequence results when two entangled photons pass optical fibers under differential stress?
A)Polarization correlation degrades significantly✓
B)Refractive index becomes isotropic
C)Phase coherence becomes entirely constructive
D)Group velocity dispersion becomes negligible
💡 Explanation
Differential stress alters each fiber's refractive index, causing varying propagation delays and polarization changes. Because Quantum decoherence degrades the original quantum entanglement; therefore, polarization correlation decreases, rather than changes in optical isotropy or fiber dispersion.
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