Fourier imaging isolates a ring-shaped superradiant emission pattern from cold 87Rb clouds that matches the most superradiant collective jump operator, with superlinear intensity scaling after spatial filtering.
Robicheaux, Theoretical study of early-time superra- diance for atom clouds and arrays, Phys
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The maximum photon emission rate in atomic ensembles scales universally as atom number times optical depth at fixed density, unifying ordered and disordered systems from independent emission to the Dicke limit.
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Optical depth dictates universal bounds on many-body decay in atomic ensembles
The maximum photon emission rate in atomic ensembles scales universally as atom number times optical depth at fixed density, unifying ordered and disordered systems from independent emission to the Dicke limit.