Optical response of atom chains beyond the limit of low light intensity: The validity of the linear classical oscillator model

Williamson, L. A.; Ruostekoski, J.

doi:10.48550/arxiv.2002.01417

Cited by 2 publications

(2 citation statements)

References 55 publications

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“…8. While increasing pump strength suggests that a lower number of atoms is necessary to reach stability, it actually challenges the validity of the linear optics approximation [28], just as in the case of Doppler cooling.…”

Section: Impact Of the Spontaneous Emissionmentioning

confidence: 99%

Cooperative Cooling in a 1D Chain of Optically Bound Cold Atoms

Gisbert,

Piovella,

Bachelard

2020

Preprint

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We report on the optical binding of one-dimensional chains of cold atoms shone by a transverse pump, where particles self-organize to a distance close to an optical wavelength. As the number of particles is increased, the trapping potential increases logarithmically as the contributions from all atoms add up constructively. We identify a cooperative cooling mechanism, due to the mutual exchange of photons between atoms, which can beat the spontaneous emission for chains that are long enough. Surprisingly, the cooling results optimal very close to the resonance. This new cooperative cooling mechanism thus paves the way to experiments of optical binding of cold atoms in one and two dimensions.

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Section: Impact Of the Spontaneous Emissionmentioning

confidence: 99%

Cooperative Cooling in a 1D Chain of Optically Bound Cold Atoms

Gisbert,

Piovella,

Bachelard

2020

Preprint

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“…Correlations can emerge even for the classical optical regime in the limit of low light intensity (LLI) of an incident laser [21,22], and the quest for observing the effects of strong light-mediated interactions is attracting considerable attention [23][24][25][26][27][28][29][30][31][32][33][34]. Regular arrays of atoms are particularly interesting for the exploration and manipulation of collective optical responses, as more recently studied also in the quantum regime [35][36][37][38][39][40][41][42][43][44][45][46]. Transmission resonance narrowing due to collective subradiance in the classical limit in a planar optical lattice was already observed [47] and other related experiments are rapidly emerging [48].…”

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confidence: 99%

A superatom picture of collective nonclassical light emission and dipole blockade in atom arrays

Williamson,

Borgh,

Ruostekoski

2020

Preprint

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We show that two-time, second-order correlations of scattered photons from planar arrays and chains of atoms display nonclassical features that can be described by a superatom picture of the canonical single-atom g2(τ ) resonance fluorescence result. For the superatom, the single-atom linewidth is replaced by the linewidth of the underlying collective low light-intensity eigenmode. Strong light-induced dipole-dipole interactions lead to a correlated response, suppressed joint photon detection events, and dipole blockade that inhibits multiple excitations of the collective atomic state. For targeted subradiant modes, nonclassical nature of emitted light can be dramatically enhanced even compared with that of a single atom.

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Optical response of atom chains beyond the limit of low light intensity: The validity of the linear classical oscillator model

Cited by 2 publications

References 55 publications

Cooperative Cooling in a 1D Chain of Optically Bound Cold Atoms

Cooperative Cooling in a 1D Chain of Optically Bound Cold Atoms

A superatom picture of collective nonclassical light emission and dipole blockade in atom arrays

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