Quantum tunneling time of a Bose-Einstein condensate traversing through a laser-induced potential barrier

Zhenglu Duan*, Bixuan Fan, Chun Hua Yuan, Jing Cheng, Shi Yao ZHU, Weiping Zhang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

We theoretically study the effect of atomic nonlinearity on the tunneling time in the case of an atomic Bose-Einstein condensate (BEC) traversing the laser-induced potential barrier. The atomic nonlinearity is controlled to appear only in the region of the barrier by employing the Feshbach resonance technique to tune interatomic interaction in the tunneling process. Numerical simulation shows that the atomic nonlinear effect dramatically changes the tunneling behavior of the BEC matter wave packet and results in the violation of the Hartman effect and the occurrence of negative tunneling time.

Original languageEnglish
Article number055602
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume81
Issue number5
DOIs
Publication statusPublished - 21 May 2010

Scopus Subject Areas

  • Atomic and Molecular Physics, and Optics

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