Long-lived Bloch oscillations with bosonic Sr atoms and application to gravity measurement at the micrometer scale
Anno: 2006
Autori: Ferrari G., Poli N., Sorrentino F., Tino G. M.
Affiliazione autori: Dipartimento di Fisica and LENS, Università di Firenze, INFN, INFM-CNR, I-50019 Sesto Fiorentino (FI), Italy
Abstract: We report on the observation of Bloch oscillations on the unprecedented time scale of several seconds. The experiment is carried out with ultracold bosonic Sr-88 atoms loaded into a vertical optical standing wave. The negligible atom-atom elastic cross section and zero angular momentum in the ground state makes Sr-88 an almost ideal Bose gas, insensitive to typical mechanisms of decoherence due to thermalization and external stray fields. The small size of the system enables precision measurements of forces at micrometer scale. This is a challenge in physics for studies of surfaces, Casimir effects, and searches for deviations from Newtonian gravity predicted by theories beyond the standard model.
Giornale/Rivista: PHYSICAL REVIEW LETTERS
Volume: 97 (6) Da Pagina: 060402-1 A: 060402-4
Parole chiavi: interial sensor; gravity measurement; short distance measurementsDOI: 10.1103/PhysRevLett.97.060402Citazioni: 220dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2024-04-28Riferimenti 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