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← ScienceWhich consequence results when observer bias affects quantum entanglement?
A)Spooky action at a distance
B)Decoherence reduces quantum fidelity✓
C)Quantum gates increase in error
D)Entanglement reverses faster than expected
💡 Explanation
Decoherence reduces quantum fidelity because observation forces collapse of the wave function into a definite state, unraveling the entanglement before its interaction can be fully utilized; therefore, fidelity drops rather than improving the entanglement, regardless of distance.
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