Pulsed quantum Tunneling with matter waves
Anno: 2002
Autori: Salasnich L.
Affiliazione autori: University of Milan
Abstract: In this report we investigate the macroscopic quantum tunneling of a Bose condensate failing under gravity and scattering on a Gaussian barrier that could model a mirror of far-detuned sheet of light. We analyze the effect of the inter-atomic interaction and that of a transverse confining potential. We show that the quantum tunneling can be quasi-periodic and in this way one could generate coherent Bose condensed atomic pulses. In the second part of the report, we discuss an effective 1D time-dependent non-polynomial nonlinear Schrodinger equation (NPSE), which describes cigar-shaped condensates. NPSE is obtained from the 3D Gross-Pitaevskii equation by using a variational approach. We find that NPSE gives much more accurate results than all other effective 1D equations recently proposed.
Giornale/Rivista: LASER PHYSICS
Volume: 12 (1) Da Pagina: 198 A: 202
Parole chiavi: ultracold atomsCitazioni: 79dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2025-05-18Riferimenti tratti da Isi Web of Knowledge: (solo abbonati) Link per visualizzare la scheda su IsiWeb: Clicca quiLink per visualizzare la citazioni su IsiWeb: Clicca qui
