Data di Pubblicazione:
2011
Citazione:
Cooperative scattering and radiation pressure force in dense atomic clouds / R. Bachelard, N. Piovella, P.W. Courteille. - In: PHYSICAL REVIEW A. - ISSN 1050-2947. - 84:1(2011), pp. 013821.1-013821.11. [10.1103/PhysRevA.84.013821]
Abstract:
Atomic clouds prepared in “timed Dicke” states, i.e. states where the phase of the oscillating atomic dipole moments linearly varies along one direction of space, are efficient sources of superradiant light emission [Scully et al., Phys. Rev. Lett. 96, 010501(2006)]. Here, we show that, in contrast to previous assertions, timed Dicke states are not the states automatically generated by incident laser light. In reality, the atoms act back on the driving field because of the finite refraction of the cloud. This leads to nonuniform phase shifts, which, at higher optical densities, dramatically alter the cooperative scattering properties, as we show by explicit calculation of macroscopic observables, such as the radiation pressure force.
Tipologia IRIS:
01 - Articolo su periodico
Elenco autori:
R. Bachelard, N. Piovella, P.W. Courteille
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