Dynamics of a Tunable Superfluid Junction
Authors: LeBlanc L.J., Bardon A.B., McKeever J., Extavour M.H.T., Jervis D., Thywissen J.H., Piazza F., Smerzi A.
Autors Affiliation: Department of Physics, University of Toronto, 60 St. George, Toronto ON, Canada, M5S 1A7;
INO-CNR, BEC Center, and Dipartimento di Fisica, Via Sommarive 14, 38123 Povo, Trento, Italy
Abstract: We study the population dynamics of a Bose-Einstein condensate in a double-well potential throughout the crossover from Josephson dynamics to hydrodynamics. At barriers higher than the chemical potential, we observe slow oscillations well described by a Josephson model. In the limit of low barriers, the fundamental frequency agrees with a simple hydrodynamic model, but we also observe a second, higher frequency. A full numerical simulation of the Gross-Pitaevskii equation giving the frequencies and amplitudes of the observed modes between these two limits is compared to the data and is used to understand the origin of the higher mode. Implications for trapped matter-wave interferometers are discussed.
Journal/Review: PHYSICAL REVIEW LETTERS
Volume: 106 (2) Pages from: 025302 to: 025302
KeyWords: condensazione di bose-einstein; josephson junction; DOI: 10.1103/PhysRevLett.106.025302Citations: 79data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2019-11-17References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here