Time-resolved measurement of Landau-Zener tunneling in different bases
- Institut fuer Theoretische Physik, Universitaet Heidelberg, Philosophenweg 19, D-69120 Heidelberg (Germany)
- Institut fuer Experimentalphysik, University of Innsbruck, Technikerstrasse 25, A-6020 Innsbruck (Austria)
- Consorzio Nazionale Italiano di Struttura della Materia (CNISM)-Pisa, Dipartimento di Fisica, Universita di Pisa, Lgo Pontecorvo 3, I-56127 Pisa (Italy)
- Istituto Nazionale di Ottica (INO)-CNR, Dipartimento di Fisica, Universita di Pisa, Lgo Pontecorvo 3, I-56127 Pisa (Italy)
A comprehensive study of the tunneling dynamics of a Bose-Einstein condensate in a tilted periodic potential is presented. We report numerical and experimental results on time-resolved measurements of the Landau-Zener tunneling of ultracold atoms introduced by the tilt, which experimentally is realized by accelerating the lattice. The use of different protocols enables us to access the tunneling probability, numerically as well as experimentally, in two different bases, namely, the adiabatic basis and the diabatic basis. The adiabatic basis corresponds to the eigenstates of the lattice, and the diabatic one to the free-particle momentum eigenstates. Our numerical and experimental results are compared with existing two-state Landau-Zener models.
- OSTI ID:
- 21442982
- Journal Information:
- Physical Review. A, Vol. 82, Issue 1; Other Information: DOI: 10.1103/PhysRevA.82.013633; (c) 2010 The American Physical Society; ISSN 1050-2947
- Country of Publication:
- United States
- Language:
- English
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