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← TechnologyWhich outcome occurs when rapid temperature changes alter the Josephson junctions in a superconducting circuit?
A)Quantum decoherence lowers circuit Q✓
B)Ohmic resistance decreases exponentially
C)Bandwidth increases in proportion
D)Critical current remains unexpectedly constant
💡 Explanation
Quantum decoherence lowers the circuit Q because thermal fluctuations disrupt the delicate quantum superposition states maintained by the Josephson junctions due to phonon interactions. Therefore, decoherence increases, rather than benefiting from the quantum nature of the superconducting material.
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