Cooperative states and shift in resonant scattering of an atomic ensemble
Ting Hsu,
Kuan-Ting Lin,
Guin-Dar Lin
Abstract:We investigate the spectral shift known as the collective Lamb shift in forward scattering for a cold dense atomic cloud. The shift results from resonant dipole-dipole interaction mediated by real and virtual photon exchange, forming many-body states displaying various super- and subradiant behaviour. However, the scattering spectrum reflects the overall contributions from these states but also averages out the radiative details associated with the underlying spin orders, causing ambiguity in determination and… Show more
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