Journal
PHYSICS LETTERS A
Volume 379, Issue 12-13, Pages 947-951Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physleta.2015.01.034
Keywords
Cold atoms; Coherent control; Tunneling dynamics; Coherent destruction of tunneling
Categories
Funding
- National Natural Science Foundation of China [11205021, 2011CB921503, 11374040, 11175064, 11105020]
- Hunan Provincial Natural Science Foundation of China [12JJ4011]
- Education Department Foundation of Hunan Provincial [12C0042, Yb2013b038, 13B134]
- China Postdoctoral Science Foundation [2012M520206]
- program for Science and Technology Innovative Research Team in Higher Educational Institutions of Hunan Province
- construct program of the key discipline in hunan province
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We study the tunneling dynamics of bosons with periodically modulated interaction held in a triple-well potential. In high-frequency approximation, we derive a set of reduced coupled equations and the corresponding Floquet solutions are obtained. Based on the analytical results and their numerical correspondence, the directed selective-tunneling effect of a single atom is demonstrated when all bosons are prepared in middle well initially. A scheme for separating a single atom from N bosons is presented, in which the atom can be trapped in right or left well by adjusting the modulation strength. (C) 2015 Elsevier B.V. All rights reserved.
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