Nonlinearity effects on the directed momentum current

Wen-Lei Zhao, Li-Bin Fu, and Jie Liu
Phys. Rev. E 90, 022907 – Published 14 August 2014

Abstract

We investigate the quantum transport dynamics governed by the nonlinear Schrödinger equation with a periodically-δ-kicking potential and discover the emergence of a directed current in momentum space. With the increase of nonlinearity, we find strikingly that the momentum current decreases, reverses, and finally vanishes, indicating that the quantum transport can be effectively manipulated through adjusting the nonlinearity. The underlying dynamic mechanism is uncovered and some important implications are addressed.

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  • Received 25 June 2013
  • Revised 26 January 2014

DOI:https://doi.org/10.1103/PhysRevE.90.022907

©2014 American Physical Society

Authors & Affiliations

Wen-Lei Zhao1,2,3, Li-Bin Fu2,3,*, and Jie Liu2,3,†

  • 1School of Science, Jiangxi University of Science and Technology, Ganzhou 341000, China
  • 2National Laboratory of Science and Technology on Computational Physics, Institute of Applied Physics and Computational Mathematics, Beijing 100088, China
  • 3HEDPS, Center for Applied Physics and Technology, Peking University, Beijing 100084, China

  • *lbfu@iapcm.ac.cn
  • liu_jie@iapcm.ac.cn

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Issue

Vol. 90, Iss. 2 — August 2014

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