Exponential Linewidth Narrowing and Enhancement of Sensitivity in Ramsey Interferometry with an Optically Thick Ensemble of AtomsRemoveS. A. Moiseev, K. I. Gerasimov, M. M. Minnegaliev, I. V. Brekotkin, and E. S. MoiseevPhys. Rev. Lett. 137, 023603 (2026)
