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Combined effects of particle interaction and nonlinear sweep on Landau-Zener transition |
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| Authors: | Fu-Quan Dou Sheng-Chang LiHui Cao |
| Affiliation: | a Department of Physics, School of Science, Beijing Institute of Technology, Beijing 100081, China b Key Laboratory of Atomic and Molecular Physics and Functional Materials of Gansu Province, College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, China c Science and Technology Computation Physics Laboratory, Institute of Applied Physics and Computational Mathematics, Beijing 100088, China |
| Abstract: | We investigate the Landau-Zener transition (LZT) of a two-level system with two types of nonlinearity: particle interaction and nonlinear time-dependent energy sweep, both numerically and analytically. Due to the interplay between these two types of nonlinearity, many interesting phenomena in different parameter regions occur, including breakdown of adiabaticity, fade-out of interference phenomenon, and asymmetry of transition probability. The potential experimental observation of transition dynamics in this system is suggested. |
| Keywords: | Landau-Zener transition Nonlinearity Interference Asymmetry |
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