Cavity-mediated all-to-all interactions in a solid-state 171Yb3+:CaWO4 ensemble enable superradiance, one-axis twisting, and gap-protected coherence extending Ramsey times from microseconds to milliseconds.
With a superconducting cavity (κ/2π∼10 kHz), the residual superradiant decay will be further suppressed, potentially extending T ∗ 2 toward the intrinsic T2 >150 ms 43
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Cavity-mediated coherence protection and one-axis twisting for spins in solids
Cavity-mediated all-to-all interactions in a solid-state 171Yb3+:CaWO4 ensemble enable superradiance, one-axis twisting, and gap-protected coherence extending Ramsey times from microseconds to milliseconds.