Matter waves and quantum tunneling engineered by time-dependent interactions

Journal Article · Sat May 15 00:00:00 EDT 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.81.053614· OSTI ID:21408872

Bludov, Yu V ^[1]; Konotop, V V ^[2]; Salerno, M ^[3]

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1. Centro de Fisica, Universidade do Minho, Campus de Gualtar, Braga 4710-057 (Portugal)
2. Centro de Fisica Teorica e Computacional, Universidade de Lisboa, Avenida Professor Gama Pinto 2, Lisboa 1649-003 (Portugal)
3. Dipartimento di Fisica 'E.R. Caianiello', CNISM and INFN-Gruppo Collegato di Salerno, Universita di Salerno, Via Ponte don Melillo, 84084 Fisciano (Italy)

We report the possibility of steering gap solitons in Bose-Einstein condensates loaded in optical lattices by means of time-dependent nonlinearities, which allow one to control in a nondestructive manner both Bloch oscillations and Landau-Zener tunneling (i.e., Rabi oscillations) across band gaps. As an example we show how to move a matter-wave soliton in real and in reciprocal space from a lower to higher bands, avoiding dynamical instabilities. This opens the possibility of experimental access to gap solitons of higher bands and forcing of soliton motion through a lattice via the Feshbach resonance technique.

• OSTI ID: 21408872
• Journal Information: Physical Review. A, Vol. 81, Issue 5; Other Information: DOI: 10.1103/PhysRevA.81.053614; (c) 2010 The American Physical Society; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BOSE-EINSTEIN CONDENSATION
CONTROL
INSTABILITY
INTERACTIONS
MATTER
NONLINEAR PROBLEMS
OSCILLATIONS
RESONANCE
SOLITONS
TIME DEPENDENCE
TUNNEL EFFECT
QUASI PARTICLES