Optimal quantum control of Bose-Einstein condensates in magnetic microtraps

被引:97
作者
Hohenester, Ulrich
Rekdal, Per Kristian
Borzi, Alfio
Schmiedmayer, Joerg
机构
[1] Karl Franzens Univ Graz, Inst Phys, A-8010 Graz, Austria
[2] Karl Franzens Univ Graz, Inst Math, A-8010 Graz, Austria
[3] TU Vienna, Atom Inst Osterreich, A-1020 Vienna, Austria
来源
PHYSICAL REVIEW A | 2007年 / 75卷 / 02期
基金
奥地利科学基金会;
关键词
D O I
10.1103/PhysRevA.75.023602
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Transport of Bose-Einstein condensates in magnetic microtraps, controllable by external parameters such as wire currents or radio-frequency fields, is studied within the framework of optimal control theory (OCT). We derive from the Gross-Pitaevskii equation the optimality system for the OCT fields that allow efficient channeling of the condensate between given initial and desired states. For a variety of magnetic confinement potentials we study transport and wave-function splitting of the condensate, and demonstrate that OCT drastically outperforms simpler schemes for the time variation of the microtrap control parameters.
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页数:10
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