Univ Milan, Dipartimento Fis Aldo Pontremoli, Via Celoria 16, I-20133 Milan - Italy
 Univ Fed Sao Carlos, Rod Washington Luis, Km 235 S-N, BR-13565905 Sao Carloss, SP - Brazil
Total Affiliations: 2
Physical Review A;
JUL 14 2020.
Web of Science Citations:
We discuss theoretically 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 is optimal very close to the resonance. This peculiar cooling mechanism thus gives new insights into the cooperative physics of low-dimensional cold atom systems. (AU)