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Angular focusing, squeezing and rainbow formation in a strongly driven quantum rotor

Abstract : Semiclassical catastrophes in the dynamics of a quantum rotor (molecule) driven by a strong time-varying field are considered. We show that for strong enough fields, a sharp peak in the rotor angular distribution can be achieved via a time-domain focusing phenomenon, followed by the formation of rainbowlike angular structures. A strategy leading to the enhanced angular squeezing is proposed that uses a specially designed sequence of pulses. The predicted effects can be observed in many processes, ranging from molecular alignment (orientation) by laser fields to heavy-ion collisions, and the trapping of cold atoms by a standing light wave.
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http://hal.in2p3.fr/in2p3-00010482
Contributor : Lpsc Bibliotheque <>
Submitted on : Wednesday, October 3, 2001 - 2:17:58 PM
Last modification on : Thursday, November 19, 2020 - 12:58:34 PM

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I.Sh. Averbukh, R. Arvieu. Angular focusing, squeezing and rainbow formation in a strongly driven quantum rotor. Physical Review Letters, American Physical Society, 2001, 87, 163601-(4 p.). ⟨10.1103/PhysRevLett.87.163601⟩. ⟨in2p3-00010482⟩

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