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Stochastic heating and self-induced cooling in optically bound pairs of atoms

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Autor(es):
Gisbert, Angel T. ; Piovella, Nicola ; Bachelard, Romain
Número total de Autores: 3
Tipo de documento: Artigo Científico
Fonte: PHYSICAL REVIEW A; v. 99, n. 1, p. 9-pg., 2019-01-22.
Resumo

The light scattered by cold atoms induces mutual optical forces between them, which can lead to bound states. In addition to the trapping potential, this light-induced interaction generates a velocity-dependent force which damps or amplifies the stretching vibrational mode of the two-atom "molecule." This velocity-dependent force acts on time scales much longer than the mode period or the dipole dynamics, determining the true stability of the bound state. We show that, for two atoms, the stochastic heating due to spontaneous emission always exceeds the bounding effect, so pairs of cold atoms cannot be truly stable without an extra cooling mechanism. (AU)

Processo FAPESP: 14/01491-0 - Nuvens atômicas sob estresse
Beneficiário:Romain Pierre Marcel Bachelard
Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores