Dynamical control of matter-wave tunneling in periodic potentials
Authors: Lignier H., Sias C., Ciampini D., Singh Y., Zenesini A., Morsch O., Arimondo E.
Autors Affiliation: CNR-INFM, Dipartimento di Fisica “E. Fermi,” Università di Pisa, Largo Pontecorvo 3, 56127 Pisa, Italy
Abstract: We report on measurements of dynamical suppression of interwell tunneling of a Bose-Einstein condensate (BEC) in a strongly driven optical lattice. The strong driving is a sinusoidal shaking of the lattice corresponding to a time-varying linear potential, and the tunneling is measured by letting the BEC freely expand in the lattice. The measured tunneling rate is reduced and, for certain values of the shaking parameter, completely suppressed. Our results are in excellent agreement with theoretical predictions. Furthermore, we have verified that, in general, the strong shaking does not destroy the phase coherence of the BEC, opening up the possibility of realizing quantum phase transitions by using the shaking strength as the control parameter.
Journal/Review: PHYSICAL REVIEW LETTERS
Volume: 99 (22) Pages from: 220403-1 to: 220403-4
KeyWords: Optical Lattices; Quantum tunneling; Bose-Einstein condensatesDOI: 10.1103/PhysRevLett.99.220403Citations: 487data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2022-12-04References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here