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. © 2007 The American Physical Society.
Dynamical control of matter-wave tunneling in periodic potentials / Lignier, H.; Sias, C.; Ciampini, D.; Singh, Y.; Zenesini, A.; Morsch, O.; Arimondo, E.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 99:22(2007), p. 220403. [10.1103/PhysRevLett.99.220403]
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Titolo: | Dynamical control of matter-wave tunneling in periodic potentials | |
Autori: | Lignier, H.; Sias, C.; Ciampini, D.; Singh, Y.; Zenesini, A.; Morsch, O.; Arimondo, E. | |
Autori Unitn: | ||
Titolo del periodico: | PHYSICAL REVIEW LETTERS | |
Anno di pubblicazione: | 2007 | |
Numero e parte del fascicolo: | 22 | |
Codice identificativo Scopus: | 2-s2.0-36448984354 | |
Codice identificativo Pubmed: | 18233266 | |
Codice identificativo WOS: | WOS:000251327500003 | |
Digital Object Identifier (DOI): | http://dx.doi.org/10.1103/PhysRevLett.99.220403 | |
Handle: | http://hdl.handle.net/11572/344303 | |
Citazione: | Dynamical control of matter-wave tunneling in periodic potentials / Lignier, H.; Sias, C.; Ciampini, D.; Singh, Y.; Zenesini, A.; Morsch, O.; Arimondo, E.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 99:22(2007), p. 220403. [10.1103/PhysRevLett.99.220403] | |
Appare nelle tipologie: | 03.1 Articolo su rivista (Journal article) |