Schematic top view of a cubic lattice of atoms showing the local frequency shifts of electronic transitions interrogated by a laser. Warm (cool) colors: positive (negative) shifts.
From the article:
Dipole-Dipole Frequency Shifts in Multilevel AtomsA. Cidrim, A. Piñeiro Orioli, C. Sanner, R. B. Hutson, J. Ye, R. Bachelard, and A. M. Rey
Phys. Rev. Lett. 127, 013401 (2021)
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