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← ScienceWhich risk increases when cooling superconducting qubit circuits too rapidly?
A)Reduced phase coherence lifetime✓
B)Increased critical current density
C)Suppressed quasiparticle generation
D)Enhanced magnetic flux trapping
💡 Explanation
Rapid cooling can cause differential contraction of materials, stressing interfaces and phonon scattering increasing the density of defects; therefore, reduced phase coherence arises, because defects induce decoherence rather than improve coherence at low temperatures.
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