Control of unstable macroscopic oscillations in the dynamics of three coupled Bose condensates
Anno: 2009
Autori: Buonsante P., Franzosi R., Penna V.
Affiliazione autori: C.N.I.S.M. Unità di Ricerca Politecnico di Torino, Corso Duca degli Abruzzi 24, I-10129 Torino, Italy; Dipartimento di Fisica, Politecnico di Torino, Corso Duca degli Abruzzi 24, I-10129 Torino, Italy; Dipartimento di Fisica, Università di Firenze and INFN Sez. di Firenze, Via G. Sansone 1, I-50019 Sesto Fiorentino, Italy
Abstract: We study the dynamical stability of the macroscopic quantum oscillations characterizing a system of three coupled Bose-Einstein condensates arranged into an open-chain geometry. The boson interaction, the hopping amplitude and the central-well relative depth are regarded as adjustable parameters. After deriving the stability diagrams of the system, we identify three mechanisms for realizing the transition from unstable to stable behaviour and analyse specific configurations that, by suitably tuning the model parameters, give rise to macroscopic effects which are expected to be accessible to experimental observation. Also, we pinpoint a system regime that realizes a Josephson-junction-like effect. In this regime, the system configuration does not depend on the model interaction parameters and the population oscillation amplitude is related to the condensate-phase difference. This fact makes estimating the latter quantity possible, since the measure of the oscillating amplitudes is experimentally accessible.
Giornale/Rivista: JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL
Volume: 42 (28) Da Pagina: 285307 A: 285307
Parole chiavi: coupled Bose-Einstein condensates; macroscopic oscillations; DOI: 10.1088/1751-8113/42/28/285307Citazioni: 17dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2024-05-12Riferimenti 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