Abstract
Nonlinear two-level Landau-Zener type equations for systems with relevance for Bose-Einstein condensates and nonlinear optics are considered and the minimal time to drive an initial state to a given target state is investigated. Surprisingly, the nonlinearity may be canceled by a time-optimal unconstrained driving and becomes independent of the nonlinearity. For constrained and unconstrained driving explicit expressions are derived for , the optimal driving, and the protocol.
- Received 10 November 2015
- Revised 28 March 2016
DOI:https://doi.org/10.1103/PhysRevA.94.023624
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