Collective shift in resonant light scattering by a one-dimensional atomic chain

Abstract

We experimentally study resonant light scattering by a one-dimensional randomly filled chain of cold two-level atoms. By a local measurement of the light scattered along the chain, we observe constructive interferences in light-induced dipole-dipole interactions between the atoms. They lead to a shift of the collective resonance despite the average interatomic distance being larger than the wavelength of the light. This result demonstrates that strong collective effects can be enhanced by structuring the geometrical arrangement of the ensemble. We also explore the high intensity regime where atoms cannot be described classically. We compare our measurement to a mean-field, nonlinear coupled-dipole model accounting for the saturation of the response of a single atom.

References in corpus (7)

• Cooperative resonances in light scattering from two-dimensional atomic arrays
• Atomically thin mirrors made of monolayer semiconductors
• Realization of an atomically thin mirror using monolayer MoSe2
• Cooperative eigenmodes and scattering in 1D atomic arrays
• Phase shift of a weak coherent beam induced by a single atom
• Transmission of near-resonant light through a dense slab of cold atoms
• Collective Excitation Dynamics of a Cold Atom Cloud

Cited by in corpus (5)

• A superatom picture of collective nonclassical light emission and dipole blockade in atom arrays
• Fast and efficient preparation of 1D chains and dense cold atomic clouds
• Bistable optical transmission through arrays of atoms in free space
• Parity-time symmetry and coherent perfect absorption in a cooperative atom response
• Radiative toroidal dipole and anapole excitations in collectively responding arrays of atoms